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Let Hd be the population mean difference in price. State the hypotheses to test whether the mean price is lower at one of the two Internet bookstores.

Let Hd be the population mean difference in price. State the hypotheses to test whether the mean price is lower at one of the two Internet bookstores.

MATLAB: An Introduction with Applications
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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Question 5, 10.4.57

Anna's project for her introductory statistics course was to compare the selling prices of textbooks at two Internet bookstores. She first took a random sample of ten textbooks used that term in courses at her college, based on the list of texts compiled by the college bookstore. The prices of those textbooks at the two Internet sites are shown below. Perform a significance test comparing the population mean prices. Site A $115 $79 $42 $137 $99 $29 $84 $99 $116 $69 Site B $110 $79 $39 $129 $99 $29 $69 $99 $106 $66 Let μd be the population mean difference in price. State the hypotheses to test whether the mean price is lower at one of the two Internet bookstores. Choose the correct answer below. A. Ho: Hd = 0 and H₂: Hd <0 B. Ho: Hd #0 and H₂: Hd = 0 C. Ho: Md = 0 and Ha: Hd >0 D. Ho: Hd = 0 and Ha: Hd #0 Determine the test statistic. t= (Round to three decimal places as needed.)
Transcribed Image Text:Anna's project for her introductory statistics course was to compare the selling prices of textbooks at two Internet bookstores. She first took a random sample of ten textbooks used that term in courses at her college, based on the list of texts compiled by the college bookstore. The prices of those textbooks at the two Internet sites are shown below. Perform a significance test comparing the population mean prices. Site A $115 $79 $42 $137 $99 $29 $84 $99 $116 $69 Site B $110 $79 $39 $129 $99 $29 $69 $99 $106 $66 Let μd be the population mean difference in price. State the hypotheses to test whether the mean price is lower at one of the two Internet bookstores. Choose the correct answer below. A. Ho: Hd = 0 and H₂: Hd <0 B. Ho: Hd #0 and H₂: Hd = 0 C. Ho: Md = 0 and Ha: Hd >0 D. Ho: Hd = 0 and Ha: Hd #0 Determine the test statistic. t= (Round to three decimal places as needed.)
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