7. in a hypothesis test, the test statistic was calculated to be 2.76. The rejec

Question

7. in a hypothesis test, the test statistic was calculated to be 2.76. The rejection region is -2.33 < z < 2.33. Which statement is true?

A. The null hypothesis is accepted to be true

B. The null hypothesis is rejected since the test statistic is outside the rejection region.

C. thhe null hypothesis is not rejected since the test statistic is outside the rejection region

D. The null hypothesis is rejected since the test statistic proves it to be false

8.When the alternative hypothesis is formulated in a large-sample statistical test as µ > µ0 or µ < µ0, then your large-sample statistical test is a

A. one- tailed test

B . two- tailed

C. type I

D. type II

9.

2. Assume a normal distribution. The probability that a new drug will cure a certain disease is 0.6. It is administered to 100 percent. Find the probability that it will cure more than 75 patients. round to the hundreths place?

A. 0.6%

B.0.08%

C. 0.16%

D. 0.25%

Please answer all and show working

Explanation / Answer

(7) (C)

If the calculated test statistic lies outside the rejection region, null hypothesis is not rejected.

(8) (B)

This is a two-tailed test (larger than or smaller than type).

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