After conducting a one-tailed, one-sample t-test you find the critical t value is -2.045 while the t value you obtained for your sample is -3.61. Which of the following decisions could you make?

A researcher conducts an experiment comparing two treatment conditions with 20 scores in each treatment condition. If an independent-measures design is used, how many subjects are needed for the experiment?

A vertical line is drawn through a normal distribution at z = 0.50, and separates the distribution into two sections.  What proportion of the distribution is in the larger section?

For a population with µ = 100 and s = 20, what is the X value corresponding to z = –0.75?

Which of the following locations is most likely to have a population with negatively skewed distribution, where the x-axis is age and the y-axis is frequency?

What is the difference between a Type 1 and a type 2 error?

A distribution is positively skewed.  Which is the most probable order, from smallest to largest, for the three measures of central tendency?

In a between-subjects ANOVA with three treatment conditions, all three treatments have the same mean (5.50), M1 = M2 = M3.  For these data, what will the obtained F-ratio equal?

A repeated measures study uses a sample of 25 participants to evaluate the mean differences among 5 treatment conditions. In the analysis of variance for this study, what is the value for dfTotal?

In analysis of variance, the variable that designates the groups being compared is: