How many students must be randomly selected to estimate the mean monthly income of students at a university? Suppose we want 95% confidence that x is within $124 of μ, and the o is known to be $530.O A. 124O B. 70OC. none of the other answersOD. 122OE. 50OF. 0O G. 8OH. 530C

Given: population standard deviation(σ)=530Margin of error (E)=124Confidence interval (c)=0.95

Answered: How many students must be randomly…

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

Q. 4 For a research project, suppose you want to compare the mean from a sample of 21 students against a known population mean of 100. You obtain a X = 105. Although you do not know o x you have calculated S x = 20. a. What are Ho and Ha ? b. What is your tobt? c. Comparing tobt to terit, What do you conclude? (
Review the information below and select the best choice. Select only one choice. ±σ Mean Time Between Failures Six .002 Five 0.57 Four 63 Three 2700 Assumme an electronic system at a nuclear facility is being monitored constantly, and it is currrently rated to have two milllion hours between failures. This implies that the electronic system is operating at: a. better than or equal to six sigma. b. between five and six sigma. c. between four and five sigma. d. between three and four sigma. e. less than three sigma.
Answer 1 and 2 only.
6.3.6 Let p be the population proportion for the following condition. Find the point estimates for p and q. Of 963 children surveyed, 99 plan to join the armed forces in the future. The point estimate for p, p, is (Round to three decimal places as needed.) al IS
Q.7
Q.8
How many students must be randomly selected to estimate the mean monthly income of students at a university? Suppose we want 95% confidence that x is within $129 of µ, and the o is known to be $540. O A. 129 B. 8 C. 0 D. 540 O E. 117 F. 48 G. 67 OH. none of the other answers
1.3 In a recent survey, 10,000 households were randomly selected. One of the questions on the survey asked how many TVs they had. The results are given in the table below. Number of TVs to number of households # of TVs # of Households P(X=x) 0 160 1 3140 2 3790 3 1920 4 780 5 210 Total 10,000 e) What is the average number of TVs in a household?
Consider the following histogram of a group of males. Number of Males 9 8 7 co 2 1 0 0 10 20 30 40 Ages (years) An estimate of the median ages of group of males is: A. 39.4 B. 40.5 C. 38.2 D. None of the above. 50 60 70 80
Send data to Excel Observed frequency fo Expected frequency ƒE 2 (fo-fe) ƒE Winter Spring Summer 35 1 ☐ 23 37.50 5.607 44 37.50 Fall 48 П 1.127 1 Total 150 X
Please help solve question 4 attached in picture.
A sample of n = 25 scores has a mean of M = 84. Please show all work and write out all formulas and math. Find the z-scores for this sample: a. If it was obtained from a population with μ = 80 and σ= 10. b. If it was obtained from a population with μ = 80 and σ = 20. c. If it was obtained from a population with u = 80 and σ = 40. d. What pattern did you see here in terms of your σ value, σM, and z?

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

How many students must be randomly selected to estimate the mean monthly income of students at a university? Suppose we want 95% confidence that x is within $124 of μ, and the σ is known to be $530 OA. 124 O B. 70 OC. none of the other answers O D. 122 OE. 50 OF. 0 O G. 8 520