Please use all 5 places of decimal when working with probabilities and please use at least...

Question:

Please use all 5 places of decimal when working with probabilities and please use at least 3 significant figures when dealing with proportions. For larger numbers, please use two places of decimal.

Diana and Co. Ltd. is considering changing ad agencies. Their current ad agency Ogo Inc. has historically obtained a daily average of 130 clicks. A test of an ad by Chris Inc. for 9 days has resulted in an average of 150 clicks per day with a standard deviation of 30 clicks. Using a t-test and a=.05, test the hypothesis that Chris Inc.’s performance is the same as Ogo Inc.’s performance.

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