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21f. What is your decision to either reject or fail to reject the null hypothesis? (2pt)

1. During an intensive rehabilitation program, a clinician measures her patients’ blood pressure 3 times over the 10-week program. She wants to know if her patients’ blood pressure decreases as they progress through the program. Each of her 20 patients gets their blood pressure measured all 3 times. What statistical test should she use to see if the patients’ blood pressure changes at different points during the rehab program?

12. Which one of the following do you think is closest to the actual correlation value in the scatterplot from question #11?

15a.  B1 B2 A1 15 20 A2 10 10     Main effect for A: [MainEffectA] Main effect for B: [MainEffectB] Interaction = [Interaction]

A patient is resting after lunch and reports feeling relaxed. The nurse notes a slower heart rate and increased bowel sounds. These findings indicate that the body is promoting digestion and conserving energy. Which division is most active?

2. Philip is conducting a study where he is investigating the effects of prior beliefs on text comprehension. He believes that people will differ in their ability to understand texts depending on whether the text is in line with their beliefs. In one condition, he has participants read a text that aligns with their beliefs. In another condition, he has people read a text that does not align with their beliefs. In the third condition, Philip has them read a text that does not relate to their beliefs. After their reading, Philip has the participants complete a comprehension test. What statistical test should Philip use to test his hypothesis?

4. In factorial ANOVAs, an interaction is present when:

As an instructor of Statistics in Psychology, I want to know what factors best predict final grades in my class. At the end of the semester, I have students to complete a survey questionnaire that asks them to report:   1) Course Grade: their final grade in PSY 3104 (my Stats class) 2) Hours Study: how many hours per week they studied for statistics during the semester 3) Class Missed: how many classes they missed out of 30 4) Math Skill: how skilled they think they are in mathematics (1 – not skilled; 10 – highly skilled) 5) Weekly Exercise: how many minutes the exercise per week 6) Popularity Rating: how many followers they have on TikTok

20a. The table below lists Jane’s scores on two of the specific kinds of emotional intelligence. Identify Jane’s z-score on each measure. Also identify what proportion and percentage of people score greater than Jane did and what proportion and percentage score less than Jane did on each of these measures. Graphs are provided for your convenience. (5pts)     Perceiving Emotions (PC-EI) Jane’s score 120 z-score [zscore] Greater [Greater] Less [Less]

Dependent Samples T-Test (36 pts) SportClips plays sports every week of the year except for one: shark week. You are interested in how this impacts the hair stylist’s happiness that week. Below are happiness scores from 8 hair stylists during a regular week and during shark week. Determine whether there is a difference in happiness between a regular week and shark week.