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*launch*### Elementary Statistics: A Step By Step A...10th EditionAllan G. Bluman Publisher: McGraw-Hill EducationISBN: 9781259755330

Elementary Statistics: A Step By Step A...

## Solutions for Elementary Statistics: A Step By Step Approach

Problem 1E:

Define statistics.

Problem 2E:

What is a variable?

Problem 3E:

What is meant by a census?

Problem 4E:

How does a population differ from a sample?

Problem 7E:

Why is information obtained from samples used more often than information obtained from populations?

Problem 8E:

What is meant by a biased sample?

Problem 9E:

determine whether descriptive or inferential statistics were used. 9. Because of the current...

## Browse All Chapters of This Textbook

Chapter 1 - The Nature Of Probability And StatisticsChapter 1.1 - Descriptive And Inferential StatisticsChapter 1.2 - Variables And Types Of DataChapter 1.3 - Data Collection And Sampling TechniquesChapter 1.4 - Experimental DesignChapter 2 - Frequency Distributions And GraphsChapter 2.1 - Organizing DataChapter 2.2 - Histograms, Frequency Polygons, And OgivesChapter 2.3 - Other Types Of GraphsChapter 3 - Data Description

Chapter 3.1 - Measures Of Central TendencyChapter 3.2 - Measures Of VariationChapter 3.3 - Measures Of PositionChapter 3.4 - Exploratory Data AnalysisChapter 4 - Probability And Counting RulesChapter 4.1 - Sample Spaces And ProbabilityChapter 4.2 - The Addition Rules For ProbabilityChapter 4.3 - The Multiplication Rules And Conditional ProbabilityChapter 4.4 - Counting RulesChapter 4.5 - Probability And Counting RulesChapter 5 - Discrete Probability DistributionsChapter 5.1 - Probability DistributionsChapter 5.2 - Mean, Variance, Standard Deviation, And ExpectationChapter 5.3 - The Binomial DistributionChapter 5.4 - Other Types Of DistributionsChapter 6 - The Normal DistributionChapter 6.1 - Normal DistributionsChapter 6.2 - Applications Of The Normal DistributionChapter 6.3 - The Central Limit TheoremChapter 6.4 - The Normal Approximation To The Binomial DistributionChapter 7 - Confidence Intervals And Sample SizeChapter 7.1 - Confidence Intervals For The Mean When Σ Is KnownChapter 7.2 - Confidence Intervals For The Mean When Σ Is UnknownChapter 7.3 - Confidence Intervals And Sample Size For ProportionsChapter 7.4 - Confidence Intervals For Variances And Standard DeviationsChapter 8 - Hypothesis TestingChapter 8.1 - Steps In Hypothesis Testing—traditional MethodChapter 8.2 - Z Test For A MeanChapter 8.3 - T Test For A MeanChapter 8.4 - Z Test For A ProportionChapter 8.5 - Χ2 Test For A Variance Or Standard DeviationChapter 8.6 - Additional Topics Regarding Hypothesis TestingChapter 9 - Testing The Difference Between Two Means, Two Proportions, And Two VariancesChapter 9.1 - Testing The Difference Between Two Means: Using The Z TestChapter 9.2 - Testing The Difference Between Two Means Of Independent Samples: Using The T TestChapter 9.3 - Testing The Difference Between Two Means: Dependent SamplesChapter 9.4 - Testing The Difference Between ProportionsChapter 9.5 - Testing The Difference Between Two VariancesChapter 10 - Correlation And RegressionChapter 10.1 - Scatter Plots And CorrelationChapter 10.2 - RegressionChapter 10.3 - Coefficient Of Determination And Standard Error Of The EstimateChapter 10.4 - Multiple Regression (optional)Chapter 11 - Other Chi-square TestsChapter 11.1 - Test For Goodness Of FitChapter 11.2 - Tests Using Contingency TablesChapter 12 - Analysis Of VarianceChapter 12.1 - One-way Analysis Of VarianceChapter 12.2 - The Scheffé Test And The Tukey TestChapter 12.3 - Two-way Analysis Of VarianceChapter 13 - Nonparametric StatisticsChapter 13.1 - Advantages And Disadvantages Of Nonparametric MethodsChapter 13.2 - The Sign TestChapter 13.3 - The Wilcoxon Rank Sum TestChapter 13.4 - The Wilcoxon Signed-rank TestChapter 13.5 - The Kruskal-wallis TestChapter 13.6 - The Spearman Rank Correlation Coefficient And The Runs TestChapter 14 - Sampling And SimulationChapter 14.1 - Common Sampling TechniquesChapter 14.2 - Surveys And Questionnaire DesignChapter 14.3 - Simulation Techniques And The Monte Carlo Method

### Book Details

Al Bluman's Elementary Statistics takes a non-theoretical approach to teaching the course. Statistics is the language of today's world and Bluman's market-leading Step-by-Step Approach makes it easy to learn and understand! Helping students move from the computational to the conceptual, Bluman provides all the support your students need to grasp the fundamentals of statistics and make that connection.

## Sample Solutions for this Textbook

We offer sample solutions for Elementary Statistics: A Step By Step Approach homework problems. See examples below:

Justification: A variable is a symbolic representation of a quantity which is likely to vary or...Given info: By 2040 at least 3.5 billion people will run short of water. Justification: Descriptive...A sample is drawn from the population that represents the whole population. That is, a sample...Ages of Presidents at Inauguration The data represent the ages of our Presidents at the time they...Given info: The data shows the number of college faculty listed in the table is given below: 165 221...Given Info: The amount of protein (in grams) for a variety of fast-food sandwiches is reported here...Given info: The Brunswick Research Organization surveyed 50 randomly selected individuals and asked...Given info: The given data shown below: 90 83 80 73 70 51 68 79 70 71 72 74 67 54 81 66 62 63 68 57...Given info: Refer to Exercise 6 . The data represent the ages of the Vice Presidents of the United...

Given info: The given data is shown below, 90 420 300 194 640 68 268 276 620 76 165 833 370 53 132...Refer to Exercise 6. Given info: the given data shown below: 90 83 80 73 70 51 68 79 70 71 72 74 67...Given info: The given data shown below: 90 83 80 73 70 51 68 79 70 71 72 74 67 54 81 66 62 63 68 57...Given info: A questionnaire was carried out on the housing arrangements and information from 25...Teacher Salaries The following data from several years ago represent salaries (in dollars) from a...Observers in the Frogwatch Program The number of observers in the Frogwatch USA program (a wildlife...Given info: The data shows the enrollments for selected independent religiously controlled 4-years...Given Info: The given total 3 values are 35, 24 and 18%. Calculation: Formula to calculate the...Given info: The data for the Triplets birth are shown below, 5,877 7,110 5937 6,898 6,118 6,885...Given info: The total number of the data is 50 and highest value is 2786 and lowest value is 65....Given info: Refer to Exercise 7,15 and 17. The data shows the unemployment as given below: 20.1 33.5...Given info: Team batting averages for major league baseball in 2015 are represented below. NL AL...Given Info: The given data set is, X 10 20 30 40 50 Calculation: The formula to calculate the mean...Given info: Given data is tabulated below: Costs (in dollars) Frequency 3,000.5-4,000.5 5...Given Info: Given data is tabulated below, Costs (in dollars) Frequency 196.5-217.5 5 217.5-238.5 17...Given info: The class and frequency is shown below....Given info: The data of the capacity of dams in the United States and the South America is shown in...Given info: The data are 14, 24, 51, 92, 157, 148, 30, 3, 0, 0, 4, 3, 11, 4, 7. Calculation: Formula...Given info: The data shows the number of recorded cases of meningitis for 14 different states. 10 1...Given info: Class limit Frequency 39.9-42.8 2 42.8-45.8 2 45.9-48.8 5 48.9-51.8 5 51.9-54.8 12...Given info: Given data is tabulated below, Class limit Frequency 1-3 7 4-6 9 7-9 32 10-12 20 13-15...Given info: Variables based on age are taken from a data bank, and the list of 30 values is given...Given info: The randomly selected 10 number of suspensions of the enrolled in 41 local school...Given Info: Total numbers in the data set are 10. The data represent the number of highway miles per...Given info: A pair of six-sided dice is rolled. Calculation: The possibilities for rolling a pair of...Given info: A pair of six-sided dice is rolled. Calculation: The possibilities for rolling a pair of...Given info: The information shows in Wheel spinner and the wheel spinner spun twice. Also 0 is...Given info: A single dice is rolled. Calculation: On rolling a single die has 6 different outcomes....Given info: The data set represents the three groups. Those are placebo, Drug A and drug B....Calculation: In ordinary deck of cards there are 4 suits. They are hearts, clubs, diamonds and...Calculation: Mutually exclusive events: The two events A and B are mutually exclusive events, then...Given info: The number of jacks in a desk is 4. Calculation: Here, the selections are made without...Given info: There is one student is chosen at random. There are 8,073,000 male students and...Given info: The data shows that the results Democrat and Republican Senators and terms expire which...Given info: The data shows that the distributions of types of blood groupsand Rh factors for...Given info: The data shows that the the numbers of doctors in various specialties by gender....Calculation: The formula used to find the factorial of any number n is given below:...Calculation: The formula used to find the factorial of any number n is given below:...Calculation: Combinations: A combination is an arrangement of n objects in r ways where the order of...Given info: A committee must be formed with 4 members. There are 7 women and 5 men available for the...Given info: There are 5 members A, B, C, D and E and these members should sit in a row. Calculation:...There are 20 freshmen, 20 sophomores, 15 juniors and 10 seniors. The players selected at random to...Given info: A 8-sided die is rolled. Calculation: Onrolling an 8-sided die has 8 different outcomes....Given info: Two dices are rolled. Calculation: When two dices are rolled the sample space is...Given info: In the sale of men’s store, 16 white sweaters, 3 red sweaters, 9 blue sweaters and 7...Given info: A company has three manufacturing units X, Y and Z. The three units produce televisions...Calculation: In ordinary deck of cards there are 4 suits. They are hearts, clubs, diamonds and...Given info: 12 men purchased blue golf sweaters, 8 purchased green sweaters, 4 purchased gray...Given info: A pair of six-sided dice is rolled. Calculation: The possibilities for rolling a pair of...The number of red cards in a desk is 26. Calculation: Here, the selections are made without...Given info: A die is rolled 4 times and 2 dice rolled 24 times. Calculation: Multiplicationrule: If...Given info: Two people will have a same birthday and year is not a leap year. Calculation:...Dropping College Courses Use the following table to answer the questions. Reason for dropping a...Given info: The first six numbers printed one each on side of a card is (1, 3, 6, 10, 15, 21) and x...Given info: The probability of playing one game is one-half of the plying tow computer games,...Given info: The roulette wheel has 38 numbers, 1 through 36, 0 and 00. The red colour is from 1...Given info: The two dice are rolled. Calculation: The possibilities for rolling a pair of six-sided...Unsanitary Restaurants Health officials routinely check the sanitary condition of restaurants....Given info: The number of trials n is 100 and probability of success is 0.75 Calculation: Mean of...Given info: The number of trials n is 1,000 andp is 0.01. Calculation: Mean of binomial...Rockets and Targets During the latter days of World War II, the Germans developed flying rocket...Given info: The given values are n=6,X1=3,X2=2,X3=1,p1=0.5,p2=0.3 and p3=0.2 Calculation: The...Given info: When the values are n=3,X1=1,X2=1,X3=1,p1=0.5,p2=0.3 and p3=0.2 Calculation: The formula...Given info: The probability distribution is given below: X 1 2 3 4 5 P(X) 110 310 110 210 310...Given info: The number of trials n is 12 andp is 0.3. Calculation: The binomial distribution formula...Many times in statistics it is necessary to see if a set of data values is approximately normally...Given info: Twenty students each collected a random sample of times on how long it took students to...Given info: Average number of moves a person makes in his or her lifetime is μ=12 , standard...Given info: Reliability rate is 97%. Number of times device used is 100. Calculations: The random...Given info: The random variable X denote the mistakes of restaurant bills and it follows the...Given info: The z values are 0 and 2.06. Calculation: Software procedure: Step by step procedure to...Given info: The random variable X denote the employees are multiple jobs and it follows the binomial...Calculation: Software procedure: Use Minitab; find the area under the normal curve between 0 and...Given info: The random variable z denote the standard normal variable with parameters μ=0, and σ=1....Given info: The random variable X represents the height of certain age group of people and if...Given info: The population containing the elements is {1, 5, 10}. Calculation: Use the following...Given info: The confidence level is 99%. Calculation: Since the 99% confidence interval is to be...Given info: n=18 for the 99% confidence interval for the mean. Calculation: Degrees of freedom:...Given info: n=80 and X=40 . Calculation: The value of p^ is, p^=Xn=4080=0.5 The value of q^ is,...Given info: n=60 and X=35 . Calculation: The value of p^ is, p^=Xn=3560=0.58 The value of q^ is,...Given info: n=12 and α=0.05 . Calculation: Degrees of freedom: n−1=12−1=11 Software Procedure:...Given info: x¯=25 , σ=4 , and n=49 . Calculation: Confidence interval: Software Procedure: Step by...For each conjecture, state the null and alternative hypotheses. a. The average weight of dogs is...Car Thefts You recently received a job with a company that manufactures an automobile antitheft...Given info: The sample size is, n=12 , α=0.01 and left tailed. Calculation: Degrees of freedom:...Given info: The level of significance is α=0.10 , the sample size is 14 and the test is two-tailed....The level of significance is α=0.01, the sample size is 17 and the test is right-tailed. Answer:...Given info: A sample of 50 $1 bills selected and found the average lifetime was 18.8 months. The...The Data Bank is found in Appendix B, or on the World Wide Web by following links from...Answer will vary. One of the possible answers is given below: Given info: Claim: H0:μ=220, n=15 and...Answer will vary. One of the possible answers is given below: Given info: A random sample of 100...Given info: The hypotheses are H0:μ=50 and H1:μ=52 . Calculation: For z score: Here, the level of...Home Runs For a sports radio talk show, you are asked to research the question whether more home...Given info: For no children, X¯1=8.6 , σ1=2.1 and n1=36 For children, X¯2=10.6 , σ2=2.7 and n2=36...Given info: x¯1=48.7 years, x¯2=55.3 years, s1=6.8 years, s2=3.2 years, n1=25, and n2=35....Given info: x¯1=2.3, x¯2=1.9, s1=0.6, s2=0.3, n1=16, and n2=16. Justification: Here, the means are...The purpose of the givens study is “to determine if the air quality in the United States has changed...Given info: X1=25 , n1=75 , X2=40 and n2=90 . Calculation: The value of p^1 is, p^1=X1n1=2575=0.5...Given info: X1=6 , n1=15 , X2=9 and n2=15 . Calculation: The value of p¯ is,...Given info: The data shows that the data values from a 2016 Auto Guide. The guide compared various...Given info: The data shows the areas (in square miles). Justification: Here, the claim is that “the...Given info: Two groups of randomly selected drivers are surveyed to see how many miles per week they...Given info: x¯1=$35,270 , x¯2=10.3 , s1=$3,256 , s2=$1,432 , n1=15 , and n2=30 . Justification:...Given info: Group 1 (25 and 40): X¯1=223 , σ1=6 and n1=30 Group 1 (41 and 56): X¯2=229 , σ2=6 and...Given info: x¯1=1.43 , x¯2=1.03 , s1=0.09 , s2=0.10 , n1=12 , and n2=16 Justification: Here, there...Given info: x¯1=$39,420 , x¯2=$30,215 , s1=$1,659 , s2=$4,116 , n1=12 , and n2=26 Justification:...Stopping Distances In a study on speed control, it was found that the main reasons for regulations...Given info: The data shows the average SAT verbal score (x) and the average SAT mathematical score...Given info: The data shows the number of employees working in coal production (x) and the number of...Given info: The data shows the average number of viewers the show hadlast year (x) and the average...Applying the Concepts 104 More Math Means More Money In a study to determine a persons yearly income...Given info: The data shows the rating the rating and the amount spent (y) values. Calculation: Step...Given info: The data shows the typing speed of a secretary (in words per minute) (x) and the time...Given info: The data shows the number of grams of protein (x) and the diastolic blood pressure (y)...Given info: The data shows the age of a child (x) and the number of cavities (y) values....Given info: The percentage of death and the observed count corresponding to each reason are provided...Given info: The table shows the average debt at graduation for various schools in four selected...Given info: The table shows age of the sales representative and type of item affect monthly sales....Given info: The data shows the lengths in feet of three types of bridges in the United States. The...Given info: The databank shows the IQs of the various educational levels of the subjects....Given info: The table shows the prices of four different bottles of nationwide brands. The level of...Given info: The table shows the particulate matter for prominent cities of three continents. The...Given info: The data shows the number of paid attendance for 20 randomly selected football games....Given info: The data shows the number of female pharmacist is 15. Justification: Here, the claim is...Given info: The data shows the number of calories served for lunch in elementary and secondary...Justification: The researcher had conducted a study for seeing the effectiveness of the pain...Given info: The data shows the prices for a 12-inch pepperoni pizza. Justification: Here, the claim...Given info: The data shows Fiction or Nonfiction Books, bookstore owner records the 48 books...Given info: The data shows that the different measures of the people. Calculation: State the null...Given info: The data shows Type of Movies, movie buff records 48 movies shown in a row. Calculation:...Calculation: Answers will vary. One of the possible answers is given below: The data with random...Answers will vary. One of the possible answers is given below: There are many ways to divide the...Calculation: First arrange the data according to the serial number, SNO Name Max. wind...Calculation: Answers will vary. One of the possible answers is given below: First arrange all the...Given info: The unemployment rate and average weekly benefit for all the states in U.S. are...Given info: The blood pressure data for 100 individuals are listed. Calculation: Answers will vary....

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