Final psy 3000 Worksheet (Page 1)

With an alpha level of 0.05 and repeated measures ANOVA results (F (7, 70) = 10.35, p = 0.036), what decision should you make?

• Fail to reject the null hypothesis.

• Accept the null hypothesis.

• There is no significant difference.

• Reject the null hypothesis.

Olivia and Zoe are studying the effects of different teaching methods on student performance. Can they interpret the main effects of the teaching methods if an interaction between teaching method and student engagement is present?

• Yes, main effects can be interpreted even if an interaction is present.

• No, main effects cannot be interpreted if an interaction is present.

P-value is the probability of getting the difference (or test statistic) that you did or a more extreme difference (or test statistic) under the assumption that the alternative hypothesis is true

• True

• False

The null hypothesis for a one-way ANOVA is •H0: μ1 = μ2 = μ3, and the alternative hypothesis states that at least one difference exists across levels

• true

• false

A factorial design has 3 independent variables. IV1 has 2 levels, IV2 has 4 levels, and IV3 has 2 levels. How would you write this design?

• 2x3x2

• 3x4x2

• 2x4x2

• 2x4x3

You want to study the effects of an SAT preparation course on SAT scores. A sample of 25 students were put into GROUP A that held the preparation course and then took the SAT, while 25 other students were put into GROUP B, who took the SAT without the preparation course. Then the mean scores are compared. How would you write out the null and alternative hypothesis?

• H0: μ(d) = 0 H1: μ(d) ≠ 0

• H0: μ = 100. H1: μ ≠ 100

• H0: μ1 = μ2 H1: μ1 ≠ μ2

• None of the above

What is the correct order of steps for hypothesis testing?

• Make a decision, Collect data and compute sample statistics, Set the decision criteria, State the hypotheses

• State the hypotheses, Set the decision criteria, Make a decision, Collect data and compute sample statistics

• State the hypotheses, Set the decision criteria, Collect data and compute sample statistics, Make a decision

• Set the decision criteria, State the hypotheses, Collect data and compute sample statistics, Make a decision

Post Hoc Tests are additional analysis done any time you run an ANOVA.

• True

• False

A researcher wants to know if a new diet plan changes participants' average weight from the population average of 180 pounds. A sample of participants follows the diet for 3 months, and their average weight is compared to the population average. What are the null and alternative hypotheses?

• H0: μ = 180 H1: μ ≠ 180

• H0: μ1 = μ2 H1: μ1 ≠ μ2

• H0: μ(d) = 0

• None of the above

Which correlation coefficient represents the strongest relationship?

• -0.5

• -0.75

• .25

• .10