Practice Quiz-SP

What is the test statistic to be used when the population variance is unknown?

• t-test

• z-test

• one-tailed

• two-tailed

What test statistic is used when the population variance is given?

• z-test

• t-test

• one-tailed

• two-tailed

Describe the rejection region for the given information:

5% level of significance

left-tailed test

n=40

standard deviation is known

Find the rejection region given the information below:

5% level of significance

right-tailed test

n=23, population variance is unknown

Given the information below, find the rejection region.

level of confidence is 99%

two-tailed test

population variance is known

n=37

The purpose of hypothesis testing is to reach a conclusion about ___ by examining the data contained in ___.

• population, a sample

• an experiment, a sample

• a population, an experiment

• a sample, a population

• 0.706

• 0.606

• 0.766

• 0.607

• TRUE

• FALSE

• -2.83

• -1.41

• -0.4

• -0.2