Question

1. Null and alternative hypotheses are statements about
A. population parameters.

B. sample parameters.

C. sample statistics.

D. population statistics.

E. It depends on the situation and the type of data has been collected.

2. A hypothesis test is conducted under the initial assumption that
A. the alternative hypothesis is false.

B. the alternative hypothesis is true.

C. the null hypothesis is false.

D. the null hypothesis is true.

E. We never make any assumptions when conducting a hypothesis test.

3. It is claimed that 70% of high school graduates go on to enroll in college. Believing this claimed value is incorrect, a researcher surveys a random sample of 100 high school graduates and finds that 62% of these graduates went on to enroll in college. When a hypothesis test was conducted at a significance (or alpha) level of 0.05, the p-value was found to be 0.0446. What decision should the researcher make based on the results of the hypothesis test?
A. The null hypothesis should be rejected because 0.0446 is less than 0.70.

B. The null hypothesis should be rejected because 0.0446 is less than 0.62.

C. The null hypothesis should be rejected because 0.0446 is less than 0.05.

D. All of the above statements (A, B, and C) are correct decisions.

E. None of the above statements (A, B, and C) are correct decisions.


4. In hypothesis testing,
A. a negative p-value means the null hypothesis should be rejected.

B. a p-value can be larger than 1.0. C. a smaller p-value means more evidence against the null hypothesis.

D. a larger p-value means more evidence against the null hypothesis.

E. a p-value is not affected by the size of the sample.

5. It has recently been claimed that 94% of middle school teachers are constantly stressed out. An educational researcher is doubtful of this claim and believes this percentage is too high. If data will be gathered in order to conduct a hypothesis test, what should the alternative hypothesis be?
A. Ha: p < 0.94

B. Ha: p > 0.94

C. Ha: p = 0.94

D. Ha: p ≠ 0.94

E. We cannot answer this question without knowing the sample proportion.

Answer 1

1) Answer: A) population parameters.

2) Answer: D) the null hypothesis is true.

3) Answer: C) The null hypothesis should be rejected because 0.0446 is less than 0.05.

4) Answer: C) a smaller p-value means more evidence against the null hypothesis.

5) Answer: A) Ha: p < 0.94