Chapter 10 Hypothesis Testing

CHAPTER 10

HYPOTHESIS TESTING

MULTIPLE CHOICE QUESTIONS

In the following multiple-choice questions, please circle the correct answer.

1. If a researcher takes a large enough sample, he/she will almost always obtain:

a. virtually significant results

b. practically significant results

c. consequentially significant results

d. statistically significant results

ANSWER: d

2. The null and alternative hypotheses divide all possibilities into:

a. two sets that overlap

b. two non-overlapping sets

c. two sets that may or may not overlap

d. as many sets as necessary to cover all possibilities

ANSWER: b

3. Which of the following is true of the null and alternative hypotheses?

a. Exactly one hypothesis must be true

b. both hypotheses must be true

c. It is possible for both hypotheses to be true

d. It is possible for neither hypothesis to be true

ANSWER: a

4. One-tailed alternatives are phrased in terms of:

a. (

b. < or >

c. ( or =

d. [pic]

ANSWER: b

5. The chi-square goodness-of-fit test can be used to test for:

a. significance of sample statistics

b. difference between population means

c. normality

d. probability

ANSWER: c

6. A type II error occurs when:

a. the null hypothesis is incorrectly accepted when it is false

b. the null hypothesis is incorrectly rejected when it is true

c. the sample mean differs from the population mean

d. the test is biased

ANSWER: a

7. Of type I and type II error, which is traditionally regarded as more serious?

a. Type I

b. Type II

c. They are equally serious

d. Neither is serious

ANSWER: a

8. You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n = 25 that do not lead to the...