One way to briefly state the alternative hypothesis for the control group posttest only design is to state that _____
a. the group means are equal
b. the groups are equivalent because they include the same participants
c. the null hypothesis could not be rejected
d. the group means are not equal
D
The alternative hypothesis states that there is a difference (unequal means) between the groups that is caused by the manipulation of the independent variable.
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Which of the following is FALSE? a. Behavioral measures are usually questionnaires or interviews that measure how people report that they act, think, or feel
b. Self-report measures are measures taken by carefully observing and recording others' behavior(s). c. Physical measures usually involve using an aptitude or achievement test. d. All of these statements are false.
What mothers in developing countries would be advised not to breast feed?
a. very poor mothers b. mothers who could afford to formula feed c. mothers with small breasts d. mothers with infectious diseases such as HIV/AIDS
What is measured by the numerator of the z-score test statistic?
A) ?The average distance between M and µ that would be expected if H0 was true B) ?The actual distance between M and µ C) ?The position of the sample mean relative to the critical region D) ?Whether or not there is a significant difference between M and µ
In signal detection analysis, a correct rejection takes place when a nonsignal is dismissed as not present.
Answer the following statement true (T) or false (F)