Elementary Statistics: A Step By Step Approach
Elementary Statistics: A Step By Step Approach
10th Edition
ISBN: 9781259755330
Author: Allan G. Bluman
Publisher: McGraw-Hill Education
bartleby

Videos

Textbook Question
Chapter 3.3, Problem 18E

College Room and Board Costs Room and board costs for selected schools are summarized in this distribution. Find the approximate cost of room and board corresponding to each of the following percentiles.

Costs (in dollars) Frequency

3000.5–4000.5

4000.5–5000.5

5000.5–6000.5

6000.5–7000.5

7000.5–8000.5

8000.5–9000.5

9000.5–10,000.5

5

6

18

24

19

8

5

a. 30th percentile

b. 50th percentile

c. 75th percentile

d. 90th percentile

Source: World Almanac.

Using the same data, find the approximate percentile rank of each of the following costs.

e. 5500

f. 7200

g. 6500

h. 8300

a.

Expert Solution
Check Mark
To determine

The 30th percentile of the given data.

Answer to Problem 18E

The 30th percentile of the given data is $5,06.05.

Explanation of Solution

Given info:

Given data is tabulated below:

Costs (in dollars) Frequency
3,000.5-4,000.5 5
4,000.5-5,000.5 6
5,000.5-6,000.5 18
6,000.5-7,000.5 24
7,000.5-8,000.5 19
8,000.5-9,000.5 8
9,000.5-10,000.5 5

Calculation:

Make a table as shown, and find the cumulative frequency of each class.

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

Determine the cumulative frequency of given data and write in column C.

Determine percentage of cumulative frequency and write in column D.

Table for calculating percentiles given below,

A

Class

B

Frequency( f )

C

Cumulative

frequency( cf )

D

Cumulative

cf%

3,000.5-4,000.5 5 5 5.88
4,000.5-5,000.5 6 11 12.94
5,000.5-6,000.5 18 29 34.12
6,000.5-7,000.5 24 53 62.35
7,000.5-8,000.5 19 72 84.71
8,000.5-9,000.5 8 80 94.12
9,000.5-10,000.5 5 85 100
Total 85

Locate the 30th percentile by 30×85100=25.5 observation. So the 30th percentiles group is 5,000.5-6,000.5 containing the 25.5th observation.

Formula to calculate value corresponding percentiles,

P=l+hf(p×n100c)

Where,

  • l is lower limits of the class.
  • h is the width of class.
  • f is frequency of the class.
  • p is percentiles.
  • n is the total number.
  • c is preceding cumulative frequency.

Substitute 5,000.5 for the l and 1,000 for the h and 18 for f and 30 for p and 85 for n and 11 for c ,

P30=5,000.5+1,00018(30×8510011)=5,000.5+1,00018(25.511)=5,000.5+1,00018(14.5)=5,000.5+1,000×14.518

Simplify the equation,

P30=5,000.5+805.56=5,806.05

Thus, the 30th percentile of the data is 5,806.05.

b.

Expert Solution
Check Mark
To determine

The 50th percentiles of the given data.

Answer to Problem 18E

The 50th percentiles of the given data is6563.

Explanation of Solution

Calculation:

Substitute 6,000.5 for the l and 1,000 for the h and 24 for f and 50 for p and 85 for n and 29 for c ,

P50=6,000.5+1,00024(50×8510029)=6,000.5+1,00024(42.529)=6,000.5+1,00024(13.5)=6,000.5+1,000×13.524

Simplify the equation.

P50=6,000.5+562.5=6,563

Thus the 50th percentile of the data is 6,563.

c.

Expert Solution
Check Mark
To determine

The 75th percentile of the given data.

Answer to Problem 18E

The 75th percentile of the given data is 7,566.29.

Explanation of Solution

Calculation:

Substitute 7,000.5 for the l and 1,000 for the h and 19 for f and 75 for p and 85 for n and 53 for c .

P75=7,000.5+1,00019(75×8510053)=7,000.5+1,00019(63.7553)=7,000.5+1,00019(10.75)=7,000.5+1,000×10.7519

Simplify the equation,

P75=7,000.5+565.79=7,566.29

Thus, the 75th percentile of the data is 7,566.29.

d.

Expert Solution
Check Mark
To determine

The 90th percentile of the given data.

Answer to Problem 18E

The 90th percentile of the given data is 8,563.

Explanation of Solution

Calculation:

Substitute 8,000.5 for the l and 1,000 for the h and 8 for f and 90 for p and 85 for n and 72 for c .

P90=8,000.5+1,0008(90×8510072)=8,000.5+1,0008(76.572)=8,000.5+1,0008(4.5)=8,000.5+1,000×4.58

Simplify the equation,

P90=8,000.5+562.5=8,563

Thus the 90th percentile of the data is 8,563.

e.

Expert Solution
Check Mark
To determine

The percentiles rank corresponding to value 5500.

Answer to Problem 18E

The 24th percentile rank corresponding to the value is 5,500.

Explanation of Solution

Calculation:

Substitute 5,000.5 for the l and 10,00 for the h and 18 for f and 5500 for P and 85 for n and 11 for c .

5,500=5,000.5+1,00018(p×8510011)=5000.5+1,00018(0.85p11)=5,000.5+55.56(0.85p11)=5,000.5+47.23p611.16

Simplify the equation,

47.23p=55004389.34p=1110.6647.23=23.524

Thus the percentiles rank for the cost of 5500 is 24th percentiles.

f.

Expert Solution
Check Mark
To determine

The percentiles rank corresponding to value 7200.

Answer to Problem 18E

The 67th percentiles rank corresponding to the value 7200.

Explanation of Solution

Calculation:

Make a table as shown, and find the cumulative frequency of each class.

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

Determine the cumulative frequency of given data and write in column C.

Determine percentage of cumulative frequency and write in column D.

Table for calculating percentiles given below,

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

3000.5-4000.5 5 5 5.88
4000.5-5000.5 6 11 12.94
5000.5-6000.5 18 29 34.12
6000.5-7000.5 24 53 62.35
7000.5-8000.5 19 72 84.71
8000.5-9000.5 8 80 94.12
9000.5-10000.5 5 85 100
85

The cost 7200 lie in the interval 7000.5-8000.5

Substitute 7000.5 for the l and 1000 for the h and 19 for f and 7200 for P and 85 for n and 53 for c .

7200=7000.5+100019(p×8510053)=7000.5+100019(0.85p53)=7000.5+52.63(0.85p53)=7000.5+44.74p2789.39

Simplify the equation,

44.74p=72004211.11p=2988.8944.74=66.867(roundingup)

Thus the percentiles rank for the cost of 7200 is 67th percentiles.

g.

Expert Solution
Check Mark
To determine

The percentiles rank corresponding to value 6500.

Answer to Problem 18E

The 48th percentiles rank corresponding to the value 6500.

Explanation of Solution

Calculation:

Make a table as shown, and find the cumulative frequency of each class.

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

Determine the cumulative frequency of given data and write in column C.

Determine percentage of cumulative frequency and write in column D.

Table for calculating percentiles given below,

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

3000.5-4000.5 5 5 5.88
4000.5-5000.5 6 11 12.94
5000.5-6000.5 18 29 34.12
6000.5-7000.5 24 53 62.35
7000.5-8000.5 19 72 84.71
8000.5-9000.5 8 80 94.12
9000.5-10000.5 5 85 100
Total 85

The cost 6500 lie in the interval 6000.5-7000.5.

Substitute 6000.5 for the l and 1000 for the h and 24 for f and 6500 for P and 85 for n and 29 for c ,

6500=6000.5+100024(p×8510029)=6000.5+100024(0.85p29)=6000.5+41.67(0.85p29)=8000.5+435.42p1208.43

Simplify the equation,

35.42p=65004792.07p=1707.9335.42=48.2248th

Thus the percentiles rank for the cost of 6500 is 48th percentiles.

h.

Expert Solution
Check Mark
To determine

The percentiles rank corresponding to value 8300.

Answer to Problem 18E

The 88th percentiles rank corresponding to the value 8300.

Explanation of Solution

Calculation:

Make a table as shown, and find the cumulative frequency of each class.

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

Determine the cumulative frequency of given data and write in column C.

Determine percentage of cumulative frequency and write in column D.

Table for calculating percentiles given below,

A

Class

B

Frequency( f )

C

Cumulative frequency( cf )

D

Cumulative

cf%

3000.5-4000.5 5 5 5.88
4000.5-5000.5 6 11 12.94
5000.5-6000.5 18 29 34.12
6000.5-7000.5 24 53 62.35
7000.5-8000.5 19 72 84.71
8000.5-9000.5 8 80 94.12
9000.5-10000.5 5 85 100
85

The cost 8300 lies in the interval 8000.5-9000.5

Substitute 8000.5 for the l and 1000 for the h and 8 for f and 8300 for P and 85 for n and 72 for c .

8300=8000.5+10008(p×8510072)=8000.5+10008(0.85p72)=8000.5+125(0.85p72)=8000.5+106.25p9000

Simplify the equation,

106.25p=83008000.5+9000p=9299.5106.25=87.588

Thus the percentiles rank for the cost of 8300 is 88th percentile.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Chapter 3 Solutions

Elementary Statistics: A Step By Step Approach

Ch. 3.1 - Foreign Workers The number of foreign workers...Ch. 3.1 - Distances of Stars Of the 25 brightest stars, the...Ch. 3.1 - Contest Spelling Words The last words given and...Ch. 3.1 - Wind Speeds The data show the maximum wind speeds...Ch. 3.1 - Hourly Compensation for Production Workers The...Ch. 3.1 - Points in Rose Bowl Games The data show the number...Ch. 3.1 - Percentage of Foreign-Born People The percentage...Ch. 3.1 - Percentage of College-Educated Population over 25...Ch. 3.1 - Net Worth of Corporations These data represent the...Ch. 3.1 - Specialty Coffee Shops A random sample of 30...Ch. 3.1 - Commissions Earned This frequency distribution...Ch. 3.1 - Children of U.S. Presidents The data show the...Ch. 3.1 - Enrollments for Selected Independent Religiously...Ch. 3.1 - Automobile Selling Prices Find the weighted mean...Ch. 3.1 - Fat Grams Using the weighted mean, find the...Ch. 3.1 - Diet Cola Preference A recent survey of a new diet...Ch. 3.1 - Costs of Helicopters The costs of three models of...Ch. 3.1 - Final Grade An instructor grades exams, 20%; term...Ch. 3.1 - Final Grade Another instructor gives four 1-hour...Ch. 3.1 - For these situations, state which measure of...Ch. 3.1 - Describe which measure of central tendencymean,...Ch. 3.1 - What types of symbols are used to represent sample...Ch. 3.1 - A local fast-food company claims that the average...Ch. 3.1 - If the mean of five values is 64, find the sum of...Ch. 3.1 - If the mean of five values is 8.2 and four of the...Ch. 3.1 - Find the mean of 10, 20, 30, 40, and 50. a. Add 10...Ch. 3.1 - Harmonic Mean The harmonic mean (HM) is defined as...Ch. 3.1 - Geometric Mean The geometric mean (GM) is defined...Ch. 3.1 - Quadratic Mean A useful mean in the physical...Ch. 3.1 - Median for Grouped Data An approximate median can...Ch. 3.2 - Blood Pressure The table lists means and standard...Ch. 3.2 - What is the relationship between the variance and...Ch. 3.2 - Why might the range not be the best estimate of...Ch. 3.2 - What are the symbols used to represent the...Ch. 3.2 - What are the symbols used to represent the sample...Ch. 3.2 - Why is the unbiased estimator of variance used?Ch. 3.2 - The three data sets have the same mean and range,...Ch. 3.2 - Traveler Spending The data show the traveler...Ch. 3.2 - Cigarette Taxes The increases (in cents) in...Ch. 3.2 - Prob. 9ECh. 3.2 - Size of U.S. States The total surface area (in...Ch. 3.2 - Multiple Births The numbers of various multiple...Ch. 3.2 - Starting Teachers Salaries Starting teachers...Ch. 3.2 - Ages of U.S. Astronaut Candidates The average age...Ch. 3.2 - Times Spent in Rush-Hour Traffic A sample of 12...Ch. 3.2 - Laws Passed The data show the number of public...Ch. 3.2 - Passenger Vehicle Deaths The number of people...Ch. 3.2 - Annual Precipitation Days The number of annual...Ch. 3.2 - Use the data from Exercises 7, 15, and 17...Ch. 3.2 - Pupils Per Teacher The following frequency...Ch. 3.2 - Automotive Fuel Efficiency Thirty automobiles were...Ch. 3.2 - Murders in Cities The data show the number of...Ch. 3.2 - Reaction Times In a study of reaction times to a...Ch. 3.2 - FM Radio Stations A random sample of 30 states...Ch. 3.2 - Murder Rates The data represent the murder rate...Ch. 3.2 - Waterfall Heights The frequency distribution shows...Ch. 3.2 - Baseball Team Batting Averages Team batting...Ch. 3.2 - Missing Work The average number of days that...Ch. 3.2 - Suspension Bridges The lengths (in feet) of the...Ch. 3.2 - Hospital Emergency Waiting Times The mean of the...Ch. 3.2 - Ages of Accountants The average age of the...Ch. 3.2 - Using Chebyshevs theorem, solve these problems for...Ch. 3.2 - The mean of a distribution is 20 and the standard...Ch. 3.2 - In a distribution of 160 values with a mean of 72,...Ch. 3.2 - Calories in Bagels The average number of calories...Ch. 3.2 - Time Spent Online Americans spend an average of 3...Ch. 3.2 - Solid Waste Production The average college student...Ch. 3.2 - Sale Price of Homes The average sale price of...Ch. 3.2 - Trials to Learn a Maze The average of the number...Ch. 3.2 - Farm Sizes The average farm in the United States...Ch. 3.2 - Citrus Fruit Consumption The average U.S. yearly...Ch. 3.2 - SAT Scores The national average for mathematics...Ch. 3.2 - Work Hours for College Faculty The average...Ch. 3.2 - Prices of Musical Instruments The average price of...Ch. 3.2 - Hours of Employment The mean and standard...Ch. 3.2 - Prob. 45ECh. 3.2 - Bonuses The mean and standard deviation of the...Ch. 3.2 - Serum Cholesterol Levels For this data set, find...Ch. 3.2 - Ages of Consumers For this data set, find the mean...Ch. 3.2 - Prob. 49ECCh. 3.2 - Use this data set: 10, 20, 30, 40, 50 a. Find the...Ch. 3.2 - Mean Deviation The mean deviation is found by...Ch. 3.2 - Pearson Coefficient of Skewness A measure to...Ch. 3.2 - All values of a data set must be within sn1 of the...Ch. 3.3 - Determining Dosages In an attempt to determine...Ch. 3.3 - What is a z score?Ch. 3.3 - Define percentile rank.Ch. 3.3 - What is the difference between a percentage and a...Ch. 3.3 - Define quartile.Ch. 3.3 - What is the relationship between quartiles and...Ch. 3.3 - What is a decile?Ch. 3.3 - How are deciles related to percentiles?Ch. 3.3 - To which percentile, quartile, and decile does the...Ch. 3.3 - Vacation Days If the average number of vacation...Ch. 3.3 - Age of Senators The average age of Senators in the...Ch. 3.3 - Marriage Age for Females The mean age at which...Ch. 3.3 - Teachers Salary The average teachers salary in a...Ch. 3.3 - Test Scores Which is a better relative position, a...Ch. 3.3 - College and University Debt A student graduated...Ch. 3.3 - Annual Miles Driven The average miles driven...Ch. 3.3 - Which score indicates the highest relative...Ch. 3.3 - The data show the population (in thousands) for a...Ch. 3.3 - College Room and Board Costs Room and board costs...Ch. 3.3 - Achievement Test Scores The data shown represent...Ch. 3.3 - Airplane Speeds The airborne speeds in miles per...Ch. 3.3 - Average Weekly Earnings The average weekly...Ch. 3.3 - Test Scores Find the percentile rank for each test...Ch. 3.3 - Hurricane Damage Find the percentile rank for each...Ch. 3.3 - Test Scores Find the percentile rank for each test...Ch. 3.3 - Taxes The data for a recent year show the taxes...Ch. 3.3 - Medical Marijuana 2015 Sales Tax: The data show...Ch. 3.3 - Gold Reserves The data show the gold reserves for...Ch. 3.3 - Police Calls in Schools The number of incidents in...Ch. 3.3 - Check each data set for outliers. a. 46, 28, 32,...Ch. 3.3 - Check each data set for outliers. a. 88, 72, 97,...Ch. 3.3 - Another measure of the average is called the...Ch. 3.3 - An employment evaluation exam has a variance of...Ch. 3.3 - A particular standardized test has scores that...Ch. 3.4 - Applying the Concepts 34 The Noisy Workplace...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 16, identify the five-number summary...Ch. 3.4 - For Exercises 710, use each boxplot to identify...Ch. 3.4 - For Exercises 710, use each boxplot to identify...Ch. 3.4 - For Exercises 710, use each boxplot to identify...Ch. 3.4 - For Exercises 7-10. use each boxplot to identify-...Ch. 3.4 - School Graduation Rates The data show a sample of...Ch. 3.4 - Innings Pitched Construct a boxplot for the...Ch. 3.4 - Population of Colonies The data show the...Ch. 3.4 - Visitors Who Travel to Foreign Countries Construct...Ch. 3.4 - Areas of Islands The data show the sizes in square...Ch. 3.4 - Size of Dams These data represent the volumes in...Ch. 3.4 - Largest Dams The data show the heights (in feet)...Ch. 3.4 - Number of Tornadoes A four-month record for the...Ch. 3.4 - Unhealthy Smog Days A modified boxplot can be...Ch. 3 - Bank Failures The data show the number of bank...Ch. 3 - Shark Attacks The number of shark attacks and...Ch. 3 - AID: 1825 | 29/05/2018 3. Systolic Blood Pressure...Ch. 3 - SAT Scores The mean SAT math scores for selected...Ch. 3 - Households of Four Television Networks A survey...Ch. 3 - Investment Earnings An investor calculated these...Ch. 3 - Confirmed Measles Cases The data show a sample of...Ch. 3 - Tallest Buildings The number of stories in the 13...Ch. 3 - Rise in Tides Shown here is a frequency...Ch. 3 - Fuel Capacity The fuel capacity in gallons for...Ch. 3 - If the range of a data set is 24, find the...Ch. 3 - If the range of a data set is 56, find the...Ch. 3 - Textbooks in Professors Offices If the average...Ch. 3 - Magazines in Bookstores A survey of bookstores...Ch. 3 - Cost of Car Rentals A survey of car rental...Ch. 3 - AID: 1825 | 28/05/2018 16. Average Earnings of...Ch. 3 - Labor Charges The average labor charge for...Ch. 3 - Costs to Train Employees For a certain type of...Ch. 3 - Cost of a Mans Haircut The average cost of a mans...Ch. 3 - Exam Completion Time The mean time it takes a...Ch. 3 - Cases of Meningitis The data show the number of...Ch. 3 - Exam Grades Which of these exam grades has a...Ch. 3 - The number of police calls a small police...Ch. 3 - Printer Repairs The frequency distribution shows...Ch. 3 - Check each data set for outliers. a. 506, 511,...Ch. 3 - Check each data set for outliers. a. 14, 18, 27,...Ch. 3 - Named Storms The data show the number of named...Ch. 3 - Hours Worked The data shown here represent the...Ch. 3 - From the Data Bank, choose one of the following...Ch. 3 - Prob. 2DACh. 3 - Prob. 3DACh. 3 - Randomly select 10 values from the number of...Ch. 3 - Prob. 5DACh. 3 - AID: 1825 | 28/05/2018 Determine whether each...Ch. 3 - Prob. 2CQCh. 3 - Determine whether each statement is true or false....Ch. 3 - Prob. 4CQCh. 3 - In a data set, the mode will always be unique.Ch. 3 - Prob. 6CQCh. 3 - Determine whether each statement is true or false....Ch. 3 - Prob. 8CQCh. 3 - Determine whether each statement is true or false....Ch. 3 - Prob. 10CQCh. 3 - Prob. 11CQCh. 3 - Prob. 12CQCh. 3 - Which is not part of the five-number summary? a....Ch. 3 - A statistic that tells the number of standard...Ch. 3 - When a distribution is bell-shaped, approximately...Ch. 3 - Prob. 16CQCh. 3 - Generally, Greek letters are used to represent...Ch. 3 - Prob. 18CQCh. 3 - The symbol for the population standard deviation...Ch. 3 - When the sum of the lowest data value and the...Ch. 3 - If the mode is to the left of the median and the...Ch. 3 - An extremely high or extremely low data value is...Ch. 3 - Prob. 23CQCh. 3 - Prob. 24CQCh. 3 - Employee Years of Service In an advertisement, a...Ch. 3 - Newspapers for Sale The average number of...Ch. 3 - Prob. 27CQCh. 3 - Hours Worked The data shown here represent the...Ch. 3 - Prob. 29CQCh. 3 - Prob. 30CQCh. 3 - Exam Scores On a philosophy comprehensive exam,...Ch. 3 - Prob. 32CQCh. 3 - Prob. 1CTCCh. 3 - Ages of U.S. Residents The table shows the median...
Knowledge Booster
Statistics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
  • Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
    Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman
    Hypothesis Testing using Confidence Interval Approach; Author: BUM2413 Applied Statistics UMP;https://www.youtube.com/watch?v=Hq1l3e9pLyY;License: Standard YouTube License, CC-BY
    Hypothesis Testing - Difference of Two Means - Student's -Distribution & Normal Distribution; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=UcZwyzwWU7o;License: Standard Youtube License