Question a and b Q1. (0.5 point) What is the basic reason to perform a hypothesi

Question

Question a and b
Q1. (0.5 point) What is the basic reason to perform a hypothesis testing for a mean? Explain in your own words. Part II. Stating the null and alternative hypotheses. Q1. (3 points) The amount customers buy is a direct result of how much time they spend in a store. A study of average shopping times in a large National houseware store gave the following information: Women with a female companion average 8.3 minutes women with a male companion average= 4.5 minutes Suppose you want to set up a statistical test to challenge the claim that a woman with a female friend spends an average of 8.3 minutes shopping in such a store. What would you use for the null and alternative hypotheses if you believe this average shopping time is less than 8.3 minutes? Is this a lower one-sided test, an upper one - sided test or a two-sided test? Explain. a. b. What would you use for the null and alternative hypotheses if you believe the average shopping time is different than 8.3 minutes? Is this a lower one-sided test, an upper one -sided test or a two-sided test? Explain.

Explanation / Answer

Solution-

A. Null hypothesis - Shoping time is less than 8.3 minutes

Alternative hypothesis - Shoping time is equal to 8.3 minutes

This will be one sided upper tailed test.

B. Null hypothesis - Shoping time is equal to 8.3 minutes

Alternative hypothesis - Shoping time is not equal to 8.3 minutes

This will be two sided test.

TY!

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