4. In the frequency distribution of 100 families given below the number of familiesicorresponding to expenditure group 20-40 and 60-80 are missing from the table. However themedian is known to be 50. Find the missing frequencies.Expenditure ():0-2020-4040-6060-8080-100No. of Families :142715

Answered: Image /qna-images/answer/78894ae4-13db-4d65-910f-37243d7e2586.jpg

Answered: 4. In the frequency distribution of 100…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76 5-Compute a 95% CI for the difference in meansbetween the two groups
The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.6 Compute a 95% CI for the difference in meansbetween the two groups
1. A recent survey of INTO Newcastle University students showed that 65% own aniPhone, 75% have a Casio fx-83 calculator and 10% have neither.a. Find the percentage of students who have both an iPhone and a calculator. b. In the space below, draw a Venn Diagram to represent this information.
10. A study is conducted to determine if the blue light from a tablet device will affect the fall asleep time of people in various age groups differently. Volunteers for the study are grouped by age: 18-30, 31-50, and 50+. Half of each group is assigned a standard tablet, the other half is assigned a tablet with reduced blue light. People in each group are asked to use the tablet for 10 minutes before bed and their fall asleep time is recorded. Which of the following is correct? (A) Blocks: the three age groups. Treatments: using the standard tablet or the reduced blue light tablet before bed. Response variable: How the eyes react to blue light. (B) Blocks: the three age groups. Treatments: measuring how long it takes to fall asleep. Response variable: The hours of sleep recorded. (C) Strata: the three age groups. Treatments: using the standard tablet or the reduced blue light tablet before bed. Response variable: How the eyes react to blue light. (D) Blocks: the three age groups.…
The amount of money spent on a week’s holiday by 40 students, correct to the nearest £10, is shown below 180 190 170 210 190 160 210 180 240 130 190 150 200 210 160 200 180 130 210 180 200 190 220 170 230 270 180 220 200 210 140 210 150 200 210 190 200 170 210 180 (a) Group the data into classes of width £20 starting with 120-139, 140-159 and so on. (b) What is the modal class? (c) Using the grouped frequency distribution you found in part (a), estimate the mean and standard deviation of the data.
The number of unclaimed expired prizes (in millions of dollars) for lottery tickets bought in a sample of states is shown. 0.5 1 1.5 1.8 2.1 3 5.3 11.4 12 13 13 15.1 20 30.1 32 32.1 34 54.1 What is the class width for a frequency distribution with 5 classes?
The following is the data set for specific research regarding a certain product 15 19 14 20 13 23 16 25 17 12 20 11 23 10 14 11 25 12 11 15 8 17 8 18 16 19 17 19 24 What is the range of the data set? How many class intervals should be constructed? How many elements does the class width has? What is the frequency of the class interval with the highest value? What is the >cf of the 3rd to the highest class interval?
Let N(t) be the percentage of a state population infected with a flu virus on week t of an epidemic. What percentage is likely to be infected in week 4 if N(3) = 8 and N'(3) = 1.2?
Use the below to plot on a line graph electronically 13 SAMPLES 87SR/86SR 87RB/86SR R5945A 0.8749 7.47 R5946 0.7328 1.11 R5945 0.9379 9.11 R5945B 0.8783 7.13 R5948B 0.8191 4.35 R5949A 0.8809 7.65 R5943A 0.7545 2.06 R5939A 0.7563 1.95 R5942B 0.8147 4.77 R5947A 0.816 4.45 R5948A 0.8162 4.62 R5946A 0.8408 5.63 R5949B 0.8505 6.40
The data below gives the ages of 30 random marathon runners. 39...46...50...28...45...45...50...32...31...24...51...59...53...21...35...23...34...30...42...31...45...34...47...29...30...21...27...39...31...32. Use the frequency distribution table that you created with 5 classes for question 2 and identify the frequency of the modal class. class interval frequency 21-28 6 29-36 11 37-44 3 45-52 8 53-60 2
1. A University Director wants to see whether the average time (in minutes) it takesstudents to reach classes on time is different for three groups. The data are shown here.Junior Senior Graduates35 9 1518 3 627 12 2724 6 2221 12 2414821a) At α=0.05, can the owner conclude that there is a significant difference among themeans?b) If there is a significant difference among the means, test each pair of means?
2.3 The National Safety Council reports the following age breakdown for licensed drivers in the United States. Source: Bureau of the Census, Statistical Abstract of the United States 2009, p. 682. Age (Years) Licensed Drivers (Millions) Under 20 10.72 20–under 25 16.84 25–under 35 40.78 35–under 45 45.59 45–under 55 36.70 55–under 65 23.32 65 or over 28.76 Identify the following for the 35–under 45 classes: (a) Frequency (b) upper and lower limits (c) width and (d) midpoint.

SEE MORE QUESTIONS

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

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

SEE MORE TEXTBOOKS