In an experiment with a repeated measures design _________.
a. the entire experiment is done twice
b. one group of subjects receives one treatment, the other group receives another treatment
c. the same subjects receive both treatments
d. none of these
Using the sign test, if the null hypothesis is false, then P (the probability of a plus) _________.
a. equals 0.50 c. equals beta
b. equals alpha d. is not equal to 0.50
If alpha equals 0.05 and the probability level of your experiment is 0.04, you would _________.
a. reject the null hypothesis c. accept the null hypothesis
b. retain the null hypothesis d. redo the experiment
The null hypothesis which is appropriate for a directional alternative hypothesis asserts that _________.
a. the independent variable has had no effect
b. chance alone is responsible for the differences between conditions
c. the independent variable does not have an effect in the direction predicted by H1
d. chance alone is responsible for the differences between conditions and the independent variable does not have an effect in the direction predicted by H1
In the repeated measures design, _________.
a. differences between paired scores are analyzed
b. the raw scores in each condition are analyzed separately
c. we must use a directional alternative hypothesis
d. all of these
The sign test _________.
a. analyzes the sign of difference scores
b. is used with a repeated measures design
c. uses the binomial distribution
d. evaluates the magnitude of the differences
e. all of these
f. a, b and c
Indicate whether the statement is true or false
If you retain the null hypothesis, you may be making _________.
a. a Type II error
b. a Type I error
c. a correct decision
d. a Type II error and a correct decision
e. a Type I error and a correct decision
If you reject the null hypothesis, you may be making _________.
a. a Type II error
b. a Type I error
c. a correct decision
d. a Type II error and a correct decision
e. a Type I error and a correct decision
lf alpha is changed from 0.05 to 0.01, _________.
a. the probability of a Type II error decreases
b. the probability of a Type I error increases
c. the error probabilities stay the same the probability we will retain a false H0 increases
d. the probability we will retain a false H0 increases
An alpha level of 0.05 indicates that _________.
a. if H0 is true, the probability of falsely rejecting it is limited to 0.05
b. 95 of the time, chance is operating
c. the probability of a Type II error is 0.05
d. the probability of a correct decision is 0.05
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