Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than 90% 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 Ho 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? (Click to select) Ho: TT ≥ 0.90

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