A marketing manager is interested in determining whether customers visit more in the afternoon than in the morning. To study this question, the manager randomly samples the number of customer visits in the morning and afternoon to 5 shops shown in the table below.

shopno 1 2 3 4 5

morning 5 3 4 15 4

afternoon 3 8 2 7 9

Required:

(1) Formulate the null and alternative hypotheses for the test. Clearly define population parameters.

(2) Conduct a hypotheses test at 10% significant level to determine whether there are more customer visits in the afternoon than in the morning for these 5 shops.