# Math Tutors in your Area

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# More Practice

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## 7 thoughts on “Tutors/Practice”

A sample of 40 sales receipts from a grocery store has x = $137 and s =$30.2. Assist the
or not the mean sales at the grocery store is different from $150. (a) State the null and alternative hypotheses for the test. (b) Calculate the test statistics. (c) Determine the rejection region(s) for the test. (d) State the conclusion for the test giving reasons for your answer. • I created a two documents that may help you. They are on my website: http://www.PaulkUSA.com Click the “Math Support” tab at the top. Then click on “Math Documents” then look for the STATISTICS section. There are two documents at the end of the STATISTICS section. One document uses the Z statistic and rejection region. The other file uses the t statistic and P-Value comparison. Both approaches reach the same conclusion: Reject the null hypothesis and accept the alternative hypothesis. Therefore, the true mean of grocery store receipts is different from$150 (either more or less).