You wish to compare the average startup times of the Alpha and Beta brands of laptop...
You wish to compare the average startup times of the Alpha and Beta brands of laptop computers. To do this, you take random samples of 10 Alphas and 20 Betas and compute their average startup times. To do the hypothesis test in Excel, you should use the z-Test: Two Sample for Means. True or False
Homework Answers
False
Explanation:
For using z test,
population standard deviation of the both brands should be known.
Also, the sample sizes should be greater than or equal to 30.
Both conditions are not met in this case.
Hence cannot use z test for two means
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