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17. Claim: The average cost to repair washing machine A is the same as the average...

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Statistics

17. Claim: The average cost to repair washing machine A is thesame as the average cost to repair washing machine B. Test at α =0.05 Data: A sample of 14 washing machine A’s have an averagerepair cost of $208 and a standard deviation of $25. A sample of 16washing machine B’s has an average repair cost of $221 and astandard deviation of $29.
Assume that the population standard deviations for repair costs arethe same for each
(a) Are these data statistically significant evidence to support theclaim?

(b) Are these data statistically significant evidence to refutethe claim?

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