S1,500. pose opeindod Use z-taD What is the value of the standard error of the mean? (to nearest whole number) What is the probability that the sample mean will be more than $25,925? (to 2 decimals) Vhat is the probability that the sample mean will be within $1,250 of the population mean? (to 4 decimals) How would the probability in part (c) change if the sample size were increased to 160? (to 4 decimals)
S1,500. pose opeindod Use z-taD What is the value of the standard error of the mean? (to nearest whole number) What is the probability that the sample mean will be more than $25,925? (to 2 decimals) Vhat is the probability that the sample mean will be within $1,250 of the population mean? (to 4 decimals) How would the probability in part (c) change if the sample size were increased to 160? (to 4 decimals)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:After deducting grants based on need, the average cost to attend the University of Southern California (USC) is $25,925. Assume the population standard
deviation is $7,500. Suppose that a random sample of 40 USC students will be taken from this population. Use z-table.
a. What is the value of the standard error of the mean?
(to nearest whole number)
b. What is the probability that the sample mean will be more than $25,925?
(to 2 decimals)
c. What is the probability that the sample mean will be within $1,250 of the population mean?
(to 4 decimals)
d. How would the probability in part (c) change if the sample size were increased to 160?
(to 4 decimals)
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