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4) A local retailer claims that the mean waiting time is less than 9 minutes. A random sample of 20 waiting times has a
Posted: Thu Feb 17, 2022 11:00 am
by answerhappygod
- 4 A Local Retailer Claims That The Mean Waiting Time Is Less Than 9 Minutes A Random Sample Of 20 Waiting Times Has A 1 (22.06 KiB) Viewed 53 times
4) A local retailer claims that the mean waiting time is less than 9 minutes. A random sample of 20 waiting times has a mean of 74 minutes with a standard deviation of 2.1 minutes. Ata =0.01, test the retailer's claim. Assume the distribution is normally distributed. Round the test statistic to the nearest thousandth. (USE REJECTION REGION METHOD)