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A supermarket claims that the average wait time at the checkout counter is less than 9 minutes. We can assume that the p
Posted: Sun Jul 10, 2022 10:23 am
by answerhappygod
- A Supermarket Claims That The Average Wait Time At The Checkout Counter Is Less Than 9 Minutes We Can Assume That The P 1 (62.63 KiB) Viewed 58 times
A supermarket claims that the average wait time at the checkout counter is less than 9 minutes. We can assume that the population is Normally distributed. Consider HO: mu >= 9 H1: mu < 9 A random sample of 50 customers yielded an average wait time of 8.5 minutes and a standard deviation of 2.5 minutes. What is the value of the test statistic (tstat or t-sub-xbar)? (Provide two decimal places)