The cashier of a fastfood restaurant claims that the average amount spent by customers for dinner is F120.00. A sample of 50 customers over a month period was randomly selected and it was found out...

a. State the null and the alternative hypotheses

b. compute the test statistic

c. determine the critical value and the rejection region

d. draw a conclusion

Extracted text: The cashier of a fastfood restaurant claims that the average amount spent by customers for dinner is F120.00. A sample of 50 customers over a month period was randomly selected and it was found out that the average amount spent for dinner was P122.50. Using a 0.05 level of significance, can it be concluded that the average amount spent by customers is more than P120.00? Assume that the population standard deviation is P6.50.