The proportion of university graduates who find employment within six months of graduation is 80%. You have a random sample of n = 400 individuals. a) What are the mean and standard deviation of ˆp, the sample proportion who find employment? b) Is the distribution of ˆp approximately normal? Justify your answer. c) What is the probability that the sample proportion lies between 75% and 85%?
The proportion of university graduates who find employment within six months of graduation is 80%. You have a random sample of n = 400 individuals. a) What are the mean and standard deviation of ˆp, the sample proportion who find employment? b) Is the distribution of ˆp approximately normal? Justify your answer. c) What is the probability that the sample proportion lies between 75% and 85%?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The proportion of university graduates who find employment within six months of graduation is 80%. You have a random sample of n = 400 individuals.
a) What are the
b) Is the distribution of ˆp approximately normal? Justify your answer.
c) What is the probability that the sample proportion lies between 75% and 85%?
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