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.
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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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