• CSUN students have the opportunity to take the National Math Aptitude Test (NMAT) at the end of one semester. This test is administered all over the country to college students and, overall, this population of students averaged 80 out of 100 on this test. 92 CSUN students are asked to take the NMAT and this sample scored an average of 75 with a standard deviation of 5.5…

1. What is your Independent Variable for this study? Is this a categorical, ordinal, interval, or ratio variable?

1. What is your Dependent Variable for this study? Is this a categorical, ordinal, interval, or ratio variable?

1. State your Null Hypothesis for this comparison.

1. State your Alternative Hypothesis for this comparison.

1. Calculate a t-value for this single sample t-test. Show all of your work. Round your answer to at least two decimal places.

1. Calculate the degrees of freedom for this study. Show all your work.

• Using the degrees of freedom you found in #1f, what is the critical t-value for this study. Assume that you are using a p = 0.05 cutoff (Hint: Use the Critical T-Table #1 on Canvas). Assume you are using a two-tailed test column for now from this table.

3) Based on the critical t-value in #2 and the calculated t-value in #1:

      Do you reject your null hypothesis or accept the null hypothesis? Explain how you came to your conclusion.

Explain why I could NOT run an independent samples t-test on the information in #1.

5)         A sports psychologist is hired to do some statistical research for the CSUN volleyball team. Because CSUN wants to win the national championship in volleyball this year, they want to know if they have an edge over their rivals: CSULB. The sports psychologist is asked to compare whether CSUN’s volleyball team is significantly taller than CSULB’s team. The sports psychologist goes to both schools and collects the heights of each volleyball player on the varsity team in inches (shown below)

DETAILED ASSIGNMENT

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