40. A correlation is computed using data from 27 people. What is (are) the critical cutoff(s) for a two-tailed
hypothesis test with a p level of 0.05?
a. 0.317
b. 0.374
c. -0.381 and 0.381
d. -0.374 and 0.374
41. In the equation for a regression line, the intercept is the:
a. value for X when Y is equal to 0.
b. predicted value for Y when X is equal to 0.
c. amount that Y is predicted to increase for a one-unit increase in X.
d. z score of the amount that Y is predicted to increase as X increases.
42. The standard error of the estimate indicates:
a. how far two regression lines are from each other.
b. how far, on average, the regression line is from the mean.
c. how much error there is in any single prediction made from a given regression equation.
d. the typical distance between the regression line and each of the observed data points.
43. An independent variable that makes a unique contribution to the prediction of a dependent variable is a(n)
variable.
a. orthogonal
b. latent
c. manifest
d. unique
44. When using a nonparametric test (in contrast to a parametric hypothesis test), the:
a. range of variables available for statistical analysis is reduced.
b. sample size should be very large.
c. testing power is increased.
d. risk of committing a Type II error is increased.
45. A chi-square test for independence is an appropriate statistical test to use when the study has:
a. one nominal dependent variable.
b. one scale independent variable.
c. two nominal dependent variables.
d. two nominal independent variables.