After further data collection the marketing manager (Exercise X6.4) decides to revisit the data analysis and changes

Question:

After further data collection the marketing manager (Exercise X6.4) decides to revisit the data analysis and changes the type of test to a t-test. 

(i) Explain under what conditions a t-test could be used rather then the z-test,

(ii) Calculate the corresponding p-value if the sample size was 13 and the test statistic equal to 2.03.

From this result what would you conclude?


Data from Exercises 6.4

A marketing manager has undertaken a hypothesis test to test for the difference between accessories purchased for two different products. The initial analysis has been performed and an upper one tail z-test has been chosen. Given that the z value was calculated to be 3.45 find the corresponding p-value. From this result what would you conclude?

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Related Book For  book-img-for-question

Business Statistics Using Excel

ISBN: 9780199659517

2nd Edition

Authors: Glyn Davis, Branko Pecar

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