Statistic Unit Test

• Fail to reject the null hypothesis

• Reject the null hypothesis

• Fail to reject the alternate hypothesis

• Reject the alternate hypothesis

• 1.645

• 1.97

• 2.13

• 2.33

You believe that students at your school have a average GPA higher than 3.0. To test this theory, you conduct a survey of your Statistics class of 27 students. Which test should you use to analyze your data?

• 1 sample z test

• 1 sample t test

• cannot be determined

• -3.60

• -0.05

• 0.05

• 3.60

A Left-Tailed Test would calculate the area under the curve for ________ .

• Section A

• Section B

• Both Section A & Section B

• Neither Section A nor Section B

A Right-Tailed Test calculates the area under the curve for ________ .

• Section A

• Section B

• Both Section A & Section B

• Neither Section A nor Section B

A Two-Tailed Test calculates the area under the curve for ________ .

• Section A

• Section B

• Both Section A & Section B

• Neither Section A nor Section B

In order to find the p-value for a Right-Tailed Test, you would ____________ .

• Look up the test statistic (z) in a z table then subtract it from 1.

• Look up the positive form of the test statistic (z) in the z table then double it.

• Look up the test statistic (z) in a z table.

• Look up the negative form of the test statistic (z) in the z table then double it.

In order to find the p-value for a Two-Tailed Test, you would ____________ .

• Look up the test statistic (z) in a z table then subtract it from 1.

• Look up the positive form of the test statistic (z) in the z table then double it.

• Look up the test statistic (z) in a z table.

• Look up the negative form of the test statistic (z) in the z table then double it.

Find the p-value for a Left-Tailed Test where z = - 1.98.

• p = .9761

• p = .0239

• p = .0478

• p = 1.9522