Chicken Delight claims that 96 of its orders are delivered w

Chicken Delight claims that 96% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 76 were delivered within the promised time. At the 0.01 significance level, can we conclude that less than 96% of the orders are delivered in less than 10 minutes?

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

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.)

Solution