Which of the following is not one of the assumptions of the t-test for independent samples?
a. The populations of raw scores form at least a roughly normal distribution.
b. There are two independent samples of interval/ratio scores.
c. There is homogeneity of variance.
d. The standard deviation of at least one of the populations is known.
d
You might also like to view...
The tendency for an operant response to be emitted in the presence of a stimulus that is similar to a discriminative stimulus is known as ________?
a) Stimulus generalization b) Stimulus discrimination c) Stimulus for extinction d) Stimulus control
Research investigating the effects of paternal age on child outcomes indicates that the ages of ____ are somewhat of a turning point for men, as children conceived past these ages are at increased risk for psychological disorders such as schizophrenia and bipolar disorder
a. 29 and 30 b. 32 to 34 c. 40 to 45 d. 50 to 54