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Business, 13.07.2020 16:01 only1cache

A well known bank stores enough money during the weekends to satisfy its customers needs. The expected average withdrawal during the weekend is $550 with a standard deviation of $70. When they looked at a sample of the last 36 weekend transactions, they found the average withdrawal to be $600. At α=0.05, is there evidence that the mean withdrawal has increased during weekends? (Z0.05=1.645, Z0.025=1.96)

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