Directions: Choose the best answer to the given questions or statements. Write the letter of your choice on a separate sheet of paper. 1. The null hypothesis is rejected. What does it mean? A. The null hypothesis is incorrect. B. The alternative hypothesis is true. C. There is enough evidence against the null hypothesis. D. There is a very small probability that the null hypothesis is true.
Directions: Choose the best answer to the given questions or
statements. Write the letter of your choice on a separate sheet of
paper.
1. The null hypothesis is rejected. What does it mean?
A. The null hypothesis is incorrect.
B. The alternative hypothesis is true.
C. There is enough evidence against the null hypothesis.
D. There is a very small probability that the null hypothesis is true.
2. If the t-computed value is 2.430 and the critical value is 2.011,
what will be the decision?
A. Reject the null hypothesis.
B. Support the null hypothesis.
C. Reject the alternative hypothesis.
D. Do not reject the null hypothesis.
3. What is the third step in the hypothesis testing procedure?
A. Draw conclusion.
B. State the null and alternative hypotheses.
C. Determine the test statistic and compute it.
D. Find the critical value for the test; then draw the critical region.
4. In a left-tailed test, what will you do if the critical value is less than
the computed value?
A. Reject the null hypothesis.
B. Do not reject the null hypothesis.
C. Reject the alternative hypothesis.
D. Do not reject the alternative hypothesis.
5. The t-computed value is 1.875 and the critical value is 2.080. What
conclusion can be drawn?
A. Reject the null hypothesis.
B. Fail to reject the null hypothesis.
C. Reject the alternative hypothesis.
D. Fail to reject the alternative hypothesis.
6. What does it mean if a result is said to be significant at 1% level?
A. The null hypothesis is 99% true.
B. The null hypothesis is 99% wrong.
C. We fail to reject the false null hypothesis 1% of the time.
D. There is a 1% probability that a true null hypothesis is rejected.
7. It is a value that separates the acceptance region from the rejection
region in a normal curve when testing the hypothesis?
A. t-value C. critical value
B. z-value D. computed value
8. What should you do if the computed z-value lies in the critical
region?
A. Reject the null hypothesis.
B. Reject the alternative hypothesis.
C. Do not reject the null hypothesis.
D. Do not reject the alternative hypothesis.
9. The mean height of women is less than 64" (inches). Which of the
following represents the null and alternative hypotheses?
A. H0: μ > 64" C. H0: μ < 64"
Ha: μ < 64" Ha: μ ≠ 64"
B. H0: μ = 64" D. H0: p = 64"
Ha: μ ≠ 64" Ha: p > 64"
10. In the hypothesis testing procedure, drawing conclusion should
always be the __________ step.
A. first B. second C. third D. last
11. A one sample t-test is conducted on Ho: μ = 81.6. The sample has
a mean of 84.1, s = 3.1, n = 25, and α = .01. What conclusion can
be drawn?
A. Reject Ho. C. Fail to reject Ho.
B. Reject Ha. D. Fail to reject Ha.
12. Perform a hypothesis test where the null hypothesis is that the μ
= 6.9. A random sample of 16 items is selected. The sample mean
is 7.1 and the sample standard deviation is 2.4. It can be assumed
that the population is
A. There is enough evidence to reject the claim.
B. There is enough evidence to support the claim.
C. There is not enough evidence to reject the claim.
D. There is not enough evidence to support the claim.
13. If the computed t-value is 2.130 while the critical value is 2.086,
what conclusion can be drawn?
A. Reject both the null and alternative hypotheses.
B. Fail to reject the null and alternative hypotheses.
C. Reject the null hypothesis in favor of the alternative hypothesis.
D. Fail to reject the null and the alternative hypothesis is not
supported.
14. After formulating the hypotheses, what is the next step in the
hypothesis testing procedure?
A. Draw conclusion.
B. Choose the level of significance.
C. Determine the test statistic and compute it.
D. Find the critical value and draw the critical region.
15. Find the critical value(s) for a two-tailed test with α = 0.05.
A. z = -1.65
B. z = ±0.06
C. z = 1.65
D. z = ±1.96
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