51.Compute the degrees of freedom and define the critical region. 52.Compute the test statistic. Be sure to show your work.53.Should you reject or fail to reject the null hypothesis? a. Rejectb. Fail to reject

54.Compute the effect size of this study.55.Which of the following best summarizes the results of this study?

PSYC 312 SPRING 2019 Final Exam Sample Test Questions Answers at end of this documentSingle sample t-test (two-tailed)Educational psychologists were hired by a principal to determine if the reading comprehension scores of Washington Elementary School were significantly differentthan the district average reading comprehension score of 50. The psychologists gave the standardized reading comprehension test to 25 students from Lincoln Elementary School. Themean score was 52.5 with a standard deviation of 6. On the basis of these data, can the psychologists conclude that students’ scores are significantly differentthan the district average? Use a two-tailed test with = .05. Compute a single sample t.56.State the hypotheses in terms of population parameters. a. H0: μ = 50; H1: μ ≠ 50b. H0: μ >50; H1: μ < 50c. H0: μ <50; H1: μ > 50d.H0: μ = 52.5; H1: μ ≠ 52.5e.H0: μ >52.5; H1: μ < 52.5f.H0: μ <52.5; H1: μ > 52.557.Compute the degrees of freedom and define the critical region. 58.Compute the test statistic. Be sure to show your work.59.Should you reject or fail to reject the null hypothesis?

60.Compute the effect size of this study.61.Which of the following best summarizes the results of this study?

PSYC 312 SPRING 2019 Final Exam Sample Test Questions Answers at end of this documentIndependent t-test (one-tailed)An educational psychologist compared the ACT math scores of 20 males and 20 females who were applying to a Midwestern college. The males’ mean math score was 551 with a standard deviation of 15 and the female’s mean math score were 545 with a standard deviation of 17. Conduct a one-tailed test to determine if the male’s mean score was significantly higher than the female’s mean math score. Use an α = .05.62.State the hypotheses in terms of population parameters. a. H0: μ males= μ females; H1: μ males≠ μ femalesb. H0: μ males>μ females; H1: μ males< μ femalesc. H0: μ males<μ females; H1: μ males> μ females63.Compute the degrees of freedom and define the critical region. 64.Compute the test statistic. Be sure to show your work.65.Should you reject or fail to reject the null hypothesis? a. Rejectb. Fail to reject