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A department store accepts only its own credit card. Among a sample of 25 randomly selected card holders, it was found that the mean amount
A department store accepts only its own credit card. Among a sample of 25 randomly selected card holders, it was found that the mean amount owed was $135, and the standard deviation was $44. Use a 0.10 level of signicance to test the claim that the mean amount owed by all customers is less than $150. USE THE TABLES POSTED IN CANVAS TO SOLVE THIS PROBLEM. Round to THREE DECIMAL PLACES. Example: If C.V. = +9.123, enter 9.123 as your answer. If C.V. = -9.123, enter -9.123 as your answer. If C.V. = +/-9.123, enter +/-9.123 as your answer. Determine the critical value(s), C.V. =
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