Which answers Are examples of the law of detachment? If John finishes his homework, then he will go out with his friends. If John goes out with his friend then they will go to the movies. Therefore, if John finishes his homework, then he will go to the movies

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 $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?