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A statistician was getting his car serviced at a dealership. He wondered if the average service cost for females was higher than fo males. A random sample of 110 women had an average service cost of $240 with a standard deviation of $20. A random sample of 120 men had an average service cost of $180 with a standard deviation c $100. Define the first population as men and the second population as women. Using a 5% significance level, determine if the average service cost for women is higher than men. Give the hypotheses.

A statistician was getting his car serviced at a dealership. He wondered if the average service cost for females was higher than fo males. A random sample of 110 women had an average service cost of $240 with a standard deviation of $20. A random sample of 120 men had an average service cost of $180 with a standard deviation c $100. Define the first population as men and the second population as women. Using a 5% significance level, determine if the average service cost for women is higher than men. Give the hypotheses.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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Question 10: give the rejection region
A statistician was getting his car serviced at a dealership. He wondered if the average service cost for females was higher than for males. A random sample of 110 women had an average service cost of $240 with a standard deviation of $20. A random sample of 120 men had an average service cost of $180 with a standard deviation of $100. Define the first population as men and the second population as women. Using a 5% significance level, determine if the average service cost for women is higher than men. Give the hypotheses.
Transcribed Image Text:A statistician was getting his car serviced at a dealership. He wondered if the average service cost for females was higher than for males. A random sample of 110 women had an average service cost of $240 with a standard deviation of $20. A random sample of 120 men had an average service cost of $180 with a standard deviation of $100. Define the first population as men and the second population as women. Using a 5% significance level, determine if the average service cost for women is higher than men. Give the hypotheses.
Give the rejection region. Greater than 1.64 Less than -1.64 Greater than 1.96 Less than -1.96
Transcribed Image Text:Give the rejection region. Greater than 1.64 Less than -1.64 Greater than 1.96 Less than -1.96
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