SOC 390 SPSS Assignment The One-Sample t-Test

Question 1

1 / 1 pts

Let’s use SPSS to run a one-sample t-test! Imagine that you are interested in whether the number of hours students in a statistics course work each week differs from the average number of hours reported by the general student body at ASU. Thankfully, you have a data set that consists of information from students in a statistics course, including how many hours they work each week (“workhours”). You also happen to know that the average number of hours worked each week by the general student population at ASU is 25. Use the data provided to conduct a one sample t-test in SPSS comparing the sample data to the population mean.. The dependent variable for your test should be “workhours”.

Based on your output, the average number of hours worked each week by a sample is ________ . Enter your answer rounded to two decimal places (i.e., 10.01, not 10.1, not 10.0, not 10.010).

Question 2

1 / 1 pts

The obtained t-statistic for this test is _________ . Include the direction and all three decimal places. You do not need to include a zero before the decimal point.

Question 3

1 / 1 pts

The degrees of freedom for this test are ________ .

Question 4

1 / 1 pts

The p-value associated with the obtained t-statistic is _______ . Include all three decimal places. You do not need to include the zero to the right of the decimal point.

Question 5

1 / 1 pts

The researcher has set their alpha to .05 and has decided to conduct this as a two-tailed test. Based on the results of your analysis, the researcher should:

fail to reject the null hypothesis

mock the null hypothesis

reject the null hypothesis

defend the alternative hypothesis

Question 6

1 / 1 pts

The researcher has now learned that the sample of data came specifically from a group of online students. As such, they have chosen to re-run the analysis using the population mean for online students only, which is 35 hours per week. Which of the following values will change from the original t-test when the researcher conducts this new analysis?

The obtained value

The degrees of freedom

The sample mean

The critical value

Question 7

1 / 1 pts

Use SPSS to run the analysis described in Question 6. What is the obtained t-statistic? Enter the value with three decimal places. If it is negative, be sure to include the sign.

Question 8

1 / 1 pts

If the researcher has set the alpha for the test described in Question #6 and #7 at .05, they should:

abandon their research question

try again with a different alpha

reject the null hypothesis

fail to reject the null hypothesis

Question 9

1 / 1 pts

SPSS can be used to calculate the population average used in the one-sample t-test.

True

False

Question 10

1 / 1 pts

SPSS can only be used to conduct a one-sample t-test when the population standard deviation is known.

True

False

Quiz Score: 10 out of 10