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With alpha = .01 the two-tailed critical region for a t test using a sample of n = 16 subjects would have boundaries of ____.

A researcher conducts a hypothesis test using a sample of n = 40 from an unknown population  and compares it to a known population mean.  What is the df value for the t statistic?

The classrooms in the Psychology department are numbered from 100 to 108.  A professor records the number of classes held in each room during the fall semester.  If these values are presented in a frequency distribution graph, what kind of graph would be appropriate?

A researcher is curious about the average monthly cell phone bill for high school students in the state of Florida.  If this average could be obtained, it would be an example of a ____.

A graduate student is conducting a research study to determine if 3 different brands of pre-workout supplements affect the rate of muscle growth. In each treatment, the researcher uses a sample of n = 10 in each treatment. Given, SSBG = 54 and SSWG = 180, calculate the F-ratio.

A sample of n = 20 scores has a mean of M = 45 and a standard deviation of s = 8.  In this sample, what is the z-score corresponding to X = 57?

What is the value of SS (sum of squared deviations) for the following sample?Sample:  2, 3, 4, 7

A researcher is curious about the average monthly cell phone bill for high school students in the state of Florida.  If this average could be obtained, it would be an example of a ____.

The classrooms in the Psychology department are numbered from 100 to 108.  A professor records the number of classes held in each room during the fall semester.  If these values are presented in a frequency distribution graph, what kind of graph would be appropriate?

The data from an independent-measures research study produce a sample mean difference of 6 points and an estimated standard error of 2 points.  If there are n = 8 scores in each sample, then the value for the t statistic is ____.