Chicken Delight claims that 95% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 74 were delivered within the promised time. At the 0.01 significance level, can we conclude that less than 95% of the orders are delivered in less than 10 minutes?

(a)	What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

Reject H_o if z <

(b)	Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round the intermediate values and final answer to 2 decimal places.)

Value of the test statistic

(c)	What is your decision regarding the null hypothesis?

H₀ : 0.95