Workshop 6

Workshop 6

Hypothesis Testing

(Multiple Choice Quiz)

Name: _______________________________________

Date Completed: _____________

Select the best answer for each question.

Question 1

Testing a specific hypothesis

a. proves or disproves the conjecture.

b. supports or refutes the tenebility of the conjecture.

c. indicates causality.

d. both a and b are true.

Question 2

The null hypothesis is the hypothesis that

a. there is no difference

b. there is a difference

c. there may be a difference.

d. none of the above.

Question 3

Concerning one or more population parameters, a hypothesis is

a. a statement that is true and accurate.

b. a statement of proof.

c. a statement that is assumed to be false.

d. a statement of conjecture.

Question 4

Another name for a research hypothesis is

a. a null hypothesis.

b. an alternate hypothesis.

c. a sample distribution.

d. the test hypothesis.

Question 5

A Type I error occurs when

a. a true hypothesis is rejected.

b. a true hypothesis is not rejected.

c. a false hypotesis is rejected.

d. a false hypothesis is not rejected.

Question 6

Before testing a hypothesis, which of the following is not a consideration?

a. Errors in hypothesis.

b. The level of significance.

c. The region of rejection.

d. None of the above.

Question 7

The most serious error is

a. Type I.

b. Type II.

c. It depends on the situation.

d. Both errors are equally serious.

Question 8

When testing a null hypothesis, the level of significance is the probability that

a. a true hypothesis is rejected.

b. a true hypothesis is not rejected.

c. a false hypothesis is rejected.

d. a false hypothesis is not rejected.

Question 9

The critical values of a test statistics are those values in the sampling distribution that are

a. inside the region of rejection.

b. outside the region of rejection.

c. the beginning of th eregion of rejection.

d. the outer tail of the region of rejection.

Question 10

When the alteranate hypothesis is nondirectional, the test is called a

a. one-tailed test.

b. two-tailed test

c. center test.

d. none of the above.

Question 11

If the level of significance is 0.01, the chance of making a Type I error is

a. 99%.

b. 90%.

c. 10%.

d. 1%.

Question 12

Degrees of freedom are

a. the number of observations.

b. the number of restrictions.

c. the number of obeservations minus the number of restrictions.

d. the number of restrictions minus the number of observations.

Question 13

The standard error is most affected by

a. the level of significance.

b. the sample size.

c. the critical value.

d. the sampling distribution.

Question 14

The sample mean is

a. a point estimate.

b. an interval estimate.

c. a confidence interval.

d. none of the above.

Question 15

A the sample size increases, the difference between the normal distribution and the corresponding t distribution

a. increases.

b. remains the same.

c. decreases.

d. There is no comparison.

Question 16

The null hypothesis is written in terms of

a. statistical significance.

b. expected differences.

c. population parameters.

d. the difference between statistics and the corresponding parameters.

Question 17

The standard error of the mean based on sample data has which sampling distribution?

a. t

b. z

c. Binomial

d. Factorial

Question 18

The larger the sample size, the smaller the

a. test statistics.

b. level of significance.

c. statistical power.

d. standard error of the mean.

Question 19

When there are 250 degrees of freedom, the t-distribution is very similar to

a. the uniform distribution.

b. the normal distribution.

c. the population distribution.

d. the region of rejection.

Question 20

When the null hypothesis is rejected

a. p < alpha.

b. p > alpha.

c. p > beta.

d. p < beta.

Question 21

The complement of the level of significance is

a. an interval estimate.

b. a confidence interval.

c. a level of confidence.

d. a point estimate.

Question 22

In developing a confidence interval, one is testing

a. no hypothesis.

b. one hypothesis.

c. two hypotheses.

d. many hypothesis.

Question 23

If the 0.99 confidence interval ranhes from 25.5 to 35.5, which of the following null hypotheses
would be rejected with a two-tailed test at the 0.01 level of significance?

a. m = 28

b. m = 25

c. m = 35

d. m = 30

Question 24

The CI uses

a. a one-tailed critical value.

b. a two-tailed critical value.

c. a one-tailed sample statistics.

d. a two-tailed sample statistics.

Question 25

The width of the CI depends primarily on

a. the ppulation mean.

b. the critical value.

c. the sample mean.

d. the sample size.

Some questions taken from: Hinkle D. E., Wiersma, W. and Jurs. S. G. (2003).
Test Bank and Solution Manual: Applied Statistics for the Behavioral Science,
(5th Ed.) Boston, MA: Houghton Mifflin Company.