Question: Refer to Problem 8. A random sample of 250 customer transactions has been recorded.

At the alpha level of 0.05, the null hypothesis is rejected if (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. Z >1.960
4. Z < -1.960
5. Z < -2.33

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