a. Which chi-square test should be used on the following study? A psychotherapist wanted to see what percentages that patients sought after four different kinds of therapy consisting of play, dance, music and group therapy.     goodness of fit     test of independence 1b. A school psychologist wanted to know if the class size changed from small (n=10), medium (n=25) to large (n=100) and attendance of low and high.     goodness of fit     test of independence

If Ashley wants to test for GPA differences among first-, second-, third-, and fourth-year college students, which of these difference tests should she use? a. chi square test of independence b. between-subjects, two-way ANOVA. c. chi square goodness of fit test d. between-subjects, one-way ANOVA.

A reseacher is analyzing data from a repeated-measures research study. If the researcher ran a related samples/repeated measures t-test to analyze the data, what would the value of SS be for the analysis? Subject  1st 2nd #1 10 11 #2 4 6 #3 7 9 #4 6 5 A.    10 B.   1 C.    4 D.    6

What is percentile rank of 20?. Please answer correctly.

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.

2. Scores in the first and fourth (final) rounds for a sample of 20 golfers who competed in PGA tournaments are shown in the following table (Golfweek, February 14, 2009, and February 28, 2009). Suppose you would like to determine if the mean score for the first round of a PGA Tour event is significantly different than the mean score for the fourth and final round. Does the pressure of playing in the final round cause scores to go up? Or does the increased player concentration cause scores to come down?         Player First Round Final Round     Sleve McDichael 72 72     Onson Sweemey 68 68     Darryl Archideld 72 72     Anatoli Smorin 68 68     Rey McScriff 73 73     Glenallen Mixon 69 69     Mario McRlwain 74 74     Raul Chamgerlain 69 73     Mike Sernandez 70 73     Tony Smehrik 71 69     Player First Round Final Round     Bobson Dugnutt 73 75…

If Ashley wants to test for GPA differences among first-, second-, third-, and fourth-year college students, which of these difference tests should she use? A. chi-square test of independence B. between-subjects, two-way ANOVA C. between-subjects, one-way ANOVA D. repeated-measures ANOVA

What happens to measures of effect size such as r2 and Cohen's d as sample size increases? a. Doesn't influence the effect size. b. They tend to increase. c. They tend to decrease.

The mean price of a cup of coffee in Portland, OR is $3.94. The owner of a new coffee house believes that the mean price of coffee is different in their neighborhood. A sample of 8 coffee prices from other local coffee shops in their area are shown below. Price 4.2 2.15 3.35 3.5 2.25 2.4 3.9 3.4 Test the claim that mean price of a cup of coffee is not equal to $3.94 using a 5% level of significance. Assume that the coffee prices are normally distributed. Give answers to at least 2 decimal places. a) Fill in the hypotheses below: H0: H1: b) The p-value is 0.0234. The correct decision is to: The correct summary would be: sufficient, insufficient or not enough evidence to reject the claim

Consider the relationship between p-values and significance levels. a. Explain why a value of z-statistic that is significant at the 1% level in a one-sided test is always significant at the 5% level. b. Explain why the reverse is not true. If something is significant at the 5% level in a one-sided test it is not necessarily significant at the 1% level.