1. Calculate and apply the Pearson r correlation formula (r = SP divided by the square root of SS_XSS_Y):

for SP = 6, SS_X = 6, and SS_Y = 7.

Then describe the null decision for a two-tailed test with df = 4 and a = .05: _________.

Reject the null hypothesis or Fail to reject the null hypothesis.

2. Calculate and apply the basic general linear regression equation (y = bx + a) for this example: "b" (slope) = 20, "x" (number of hours) = 10, and "a" (y intercept) = 50. For this example, y = _____.

a. 250

b. 80

c. 150

3. True/False: In a chi-square test, the observed frequencies are always whole numbers.