Chicken Delight claims that 92% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 72 were delivered within the promised time. At the 0.01 significance level, can we conclude that less than 92% 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.)

RejectH₀ifz<

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?(Click to select)

Cannot reject

Reject

H₀: 0.92