Indochino uses sophisticated technology to improve iciency of its operations and boost its sales. It collects information on ain) basis on trends to optimize the selections of cloth purchases and the promotions it offers on its website and in its stores.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > 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 $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?