Purchase Solution

Multiple choice questions on testing of hypothesis

Not what you're looking for?

1.The power of a test is measured by its capability of
a. rejecting a null hypothesis that is true.
b. not rejecting a null hypothesis that is true.
c. rejecting a null hypothesis that is false.
d. not rejecting a null hypothesis that is false.

2. If an economist wishes to determine whether there is evidence that average family income in a community exceeds \$25,000, then
a. either a one-tailed or two-tailed test could be used with equivalent results.
b. a one-tailed test should be utilized.
c. a two-tailed test should be utilized.
d. None of the above.

3. If the Type I error (alpha) for a given test is to be decreased, then for a fixed sample size n:
a. the Type II error ( beta) will also decrease.
b. the Type II error (beta) will also increase.
c. the power of the test will increase.
d. a one-tailed test must be utilized.

4. Given the following information, calculate the degrees of freedom that should be used in the pooled-variance t test.
s12 = 4 s22 = 6
n1 = 16 n2 = 25
a. df = 41
b. df = 39
c. df = 16
d. df = 25

5. When testing H0: µ1 -µ2 greater than or equal to 0 versus H1: µ1 -µ2 < 0, the observed value of the Z-score was found to be -2.13. The p value for this test would be:
a. 0.0166.
b. 0.0332
c. 0.9668
d. 0.9834

Solution Summary

The solution provides answers and explanations for Multiple choice questions on testing of hypothesis

Solution Preview

1.The power of a test is measured by its capability of
a. rejecting a null hypothesis that is true.
b. not rejecting a null hypothesis that is true.
c. rejecting a null hypothesis that is false.
d. not rejecting a null hypothesis that is false.

Answer :c. rejecting a null hypothesis that is false.

The power of a test = (1 minus the magnitude of type II error)
We make a Type II error when we accept a null hypothesis that is false

2. If an economist wishes to determine whether there is evidence that average family income in a ...

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.