Which of the following is not a motive to establish a private sector entity

Which of the following is the least effective way to reach a potential sales prospect? referral cold call direct mail personal visit

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?

Anational survey asked people, "how often do you eat out for dinner, instead of at home? " the frequencies were as follows.