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Mathematics, 21.02.2020 21:22 lethycialee2427
The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the sample mean, sample variance and sample standard deviation of the waiting time. Round your answer to one decimal place. Waiting time0-3,4-7,8-11,12,15,16-19,20-23, 24-27Number of customers15,9,11,6,5,3,1
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