What research method would be used to see if there is a relationship between watching the Ellen DeGeneres show and happiness levels

On Halloween, Oprah puts candy out in a bowl – there are 20 Reese’s, 25 Junior Mint boxes, and 15 Laffy Taffy’s. When the first tricker-treater comes by, what is the probability they choose a Reese’s?

You have a score of X=20 on a quiz. Which set of parameters would give you the best grade on the quiz?

A repeated measures study uses a sample of 30 participants to evaluate the mean differences among 6 treatment conditions. In the analysis of variance for this study, what is the value for dfTotal?

For which of the following situations would a repeated-measures design have an advantage over an independent-measures design?

SSerror is a measure of what?

For an independent-measures research study, the data show a 2-point difference between the two treatment means and a pooled variance of 100. Given this information, the value of Cohen’s d is:

Which of these is NOT involved in calculating a standard Z-score?

A researcher is conducting a chi-square test for independence to evaluate the relationship between gender and preference for three different designs for a new automobile.  Each individual in a sample of 30 males and 30 females selects a favorite design from the three choices. If the researcher obtains a chi-square statistic of c2 = 4.81, what is the appropriate statistical decision for the test?

Would the F-ratio increase, decrease, or stay the same if you increased the sample variances?