STATISTICS AND PROBABILITY

1. 1. In a left-tailed test with 𝛼 = 0.01, the critical value of z is:

• A. -2.576

• B. -2.330

• C. -1.960

• D. -1.645

2. 2. Which of the following defines the area encompassed by the values not included in the non-rejection region or also the area of the tails of the distribution?

• A. critical value

• B. rejection region

• C. level of significance

• D. population variance

3. 3. _____________ is a point on the test distribution that is compared to the test statistic to determine whether to reject or accept the null hypothesis.

What is the rejection region?

5. 5. Draw/sketch the normal curve given the critical value and rejection region which is 𝑧 ≥ 2.33