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A positive correlation indicates that ________

What is the critical value for a correlation with n=77, one-tailed, and an alpha level of 0.01?

A researcher collects data for participants of ages 8 to 18 years old and creates a regression equation of y = 0.25x + 2, where x = age in years and y = the average number of hours spent viewing technology screens. According to this equation, what is the average number of hours a 30-year-old spends viewing screens?

Which of the following is the correct null hypothesis for an independent-measures t test?

What does the b in the linear regression equation stand for?

What happens to the expected value of M as sample size increases?

A set of n = 45 pairs of scores (X and Yvalues) produces a regression equation of Ŷ = 14X + 20. Find the predicted Y value for an X score of -5.

A student investigated how washing with soap affects bacteria levels on the hands. She tested three different methods—washing with water only, washing with regular soap, and washing with antibacterial soap. She randomly assigned 99 students to 1 of the 3 treatments. Participants washed their hands with the assigned method and cultures were taken and incubated. Based on the SPSS output below, was there a significant difference among the three hand-washing methods and why?

A two-factor study with two levels of factor A and three levels of factor B uses a separate group of 5 participants in each treatment condition.  How many participants are needed for the entire study?

The less hours a student spends studying, the worse their score is on an exam. What is this an example of?