In the Past, the Average Waiting Time Per Customer at a Fast

question 164

Multiple Choice

In the past, the average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. A random sample of 16 customer transactions produces a mean waiting time of 6.3 minutes and a standard deviation of 2 minutes.
-Give a range for the p-value for this test.

• A)0.01 < p-value < 0.025
• B)0.001 < p-value < 0.005
• C)0.005 < p-value < 0.01
• D)0.05 < p-value < 0.10
• E)0.025 < p-value < 0.05

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