Question: QUESTION 20 A major electronics store chain is interested in estimating the average amount its credit card customers spent on their first visit to the

QUESTION 20 A major electronics store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. It is known that the amount spent by the credit card customers on their first visit to the chain's new store is normally distributed. Fifteen credit card accounts were randomly sampled and analyzed with the following results - $50.50 and sample standard deviation of s. 20. A 95% confidence interval for the average amount the credit card customers spent on their first visit to the chain's new store in the mallis: 550.50 + $9.09 $50.50 + 510.12 $50.50 + $11.08 None of these choices

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