SOLUTION: Chicken Delight claims that 84 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 79 percent were delivered
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Question 616604: Chicken Delight claims that 84 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 79 percent were delivered within the promised time. At the .10 significance level, can we conclude that less than 84 percent of the orders are delivered in less than 10 minutes?
(b) Compute the value of the test statistic. (Round your answer to 2 decimal places.)
You can put this solution on YOUR website! Chicken Delight claims that 84 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 79 percent were delivered within the promised time.
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a) At the .10 significance level, can we conclude that less than 84 percent of the orders are delivered in less than 10 minutes?
Ho: P >= 0.84 (claim)
Ha: p < 0.84
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(b) Compute the value of the test statistic. (Round your answer to 2 decimal places.)
z(0.79) = (0.79 - 0.84)/sqrt[0.84*0.16/80] = -0.2440
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Cheers,
Stan H.
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