What is the probability that a simple random sample of 45 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answer to four decimal places.) b. What is the probability that a simple random sample of 45 unemployed individuals will provide a sample mean within 1/2 week of the population mean? (Round your answer to four decimal places.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question

Barron's reported that the average number of weeks an individual is unemployed is 16.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 16.5 weeks and that the population standard deviation is 5 weeks. Suppose you would like to select a sample of 45 unemployed individuals for a follow-up study.

a. What is the probability that a simple random sample of 45 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answer to four decimal places.)

b. What is the probability that a simple random sample of 45 unemployed individuals will provide a sample mean within 1/2 week of the population mean? (Round your answer to four decimal places.)     

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON