A department store's purchase return level is believed to be different from the established level of 20%. In a sample of 200 customers, 25 customers made a purchase return.In testing the management's belief, the appropriate hypotheses:1. Which of the following (A,B,C,or D) would be the correct hypothesis statement?A. Ho: p = 0.20 H₁: p=0.20B. Ho: p ≤ 0.20 H₁: p > 0.20C. Ho: P = 200 H₁: p > 200D. Ho: μ ≤ 200 H₁: μ > 200To test at 95% confidence, in a sample of 200 customers, 25 customers made a purchase return.2. The critical value isState + - or +-3. The value of the test statistic in this problem is...4. The p-value associated with the test statistic is ...5. Decision?(2 decimal places)(4 decimal places)

Answered: Image /qna-images/answer/16ededff-19e6-4509-8d90-da267e53186f.jpg

Answered: A department store's purchase return…

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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b. A manufacturer conducts a study to determine individuals who would like to own an iWatch. To collect the data, people are sent a survey via email. The following table summarises the data collected that relates to the peoples' gender. Male Female Total 32 ( ) 20 ( Want iWatch Don't Want iWatch 118 ( ) 120 ( Total i. Find all expected counts and add them to the table above. ii. Conduct an appropriate hypothesis test, at a 5% level of significance, to determine whether the desire to own an iWatch and the consumer's gender is not independent. )
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The school's newspaper reported that the proportion of students majoring in business is at least 30%. You plan on taking a sample to test the newspaper's claim. The correct set of hypotheses is Oa. Ho:p>.30 Ha: p ≤.30 O b. Ho: p .30 O d. Ho: p 2.30 Ha: p < .30
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