Mathematics, 15.04.2020 19:56, gthif6088

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. The expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of and a standard deviation of . If the management wants to give free gifts to at most of the customers, what should the amount be above which a customer would receive a free gift?

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The management of a supermarket wants to adopt a new promotional policy of giving a free gift to eve...