Question: 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 12 customer transactions has been recorded. At a significance level of

0.05, what is the rejection point condition? We would reject the null hypothesis if

(NOTE: Conduct the test of hypothesis showing all the intermediate steps and

calculations required to support your answer in the space provided below):

1. Z < - 1.645
2. Z > 1.645
3. t >1.796
4. t < -1.796
5. t < -1.782

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