Mathematics, 19.11.2019 00:31, nell1234565

Last year, a study showed that the average atm cash withdrawal took 65 seconds with a standard deviation of 10 seconds. the study is to be repeated this year, but we need to determine the required sample size (n). then, you will use a random sample from this year to construct a confidence interval for the average (mean) time it takes to withdraw cash from an atm.

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Last year, a study showed that the average atm cash withdrawal took 65 seconds with a standard devia...