You run a study in which you compare the mean of a sample to a population distribution.You know the mean of the population, but not the variance.Which statistical test do you use?

a. t test for independent means

b. t test for single sample

c. Z test

d. One-way ANOVA

You conduct a study in which you want to know if anxiety increases in a group when exposed to noise. You compare difference scores of anxiety to a normally-distributed population of which you know neither the mean nor the variance, but predict a mean difference of 0.Which test do you use?

a)t test for dependent means

b) t test for independent means

c) t test for single sample

d) one-way ANOVA

You run an experiment and know that the population you're drawing your scores from is definitely not normally distributed.Your test will be:

a. Parametric

b. Nonparametric

c. Transformed

d. The Z test

The formula for a Z score is....

a. The raw score minus the mean, divided by the standard deviation

b. The square-root of the raw score minus the mean, divided by the number of scores

c. The ratio of the raw score to the mean

d. The variance squared