Mathematics, 28.06.2021 16:40 estheradame547

Customers at Costco spend an average of $130 per trip (The Wall Street Journal, October 6, 2010). One of Costco's rivals would like to determine whether its customers spend more per trip. A survey of the receipts of 25 customers found that the sample mean was $135.25. Assume that the population standard deviation is $10.50 and that spending follows a normal distribution. A. Specify the appropriate null and alternative hypotheses to test whether average spending at the rival's store is more than $130.B. Calculate the value of the test statistic. C. Calculate the p-value. D. Calculate the critical value

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Customers at Costco spend an average of $130 per trip (The Wall Street Journal, October 6, 2010). On...

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