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One sample has n = 5 scores and the second has n = 10 scores.  If the pooled variance for the two sample is 30, then what is the value of the estimated standard error for the sample mean difference?

If other factors are held constant, what is the effect of increasing the sample size?

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?

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.

Kendall got an 80 on her Psychology exam. The mean was 85 and the standard deviation was 2. Tyler got a 75 on his Economics exam. The mean was 80 and the standard deviation was 5. Statistically who did better when the scores are z-scored?

A researcher reports t(22) = 5.30, p < .01 for an independent-measures experiment.  How many individuals participated in the entire experiment?

The calculations for a one-sample t-test examines _____________ .

On an exam with a mean of 70, you have a score of 65.  Which of the following values for the standard deviation would give you the highest position within the class, or the best score in class relative to other student’s scores?