DSRT 734-Summer 2020 - Infer Stats in Decision-Making (DSRT-734-02) - First Bi-Term

Summer 2020 - Infer Stats in Decision-Making (DSRT-734-02) - First Bi-Term . Questions and Answers 18 4 15 4 16 5 14 5 6 7 20 5 Selected Mean 13.5 and 5.75Variance 24.57 and 3.07Observation 8 and 8Df 8Test statistic t 4.1691 Answer: Correct Answer: Regression Statistics Multiple R 0. R Square 0. Adjusted R Square 0. Standard Error 3. Observations 8 ANOVA df SS MS F Significance F Regression 1 116.2791 116.2791 12.52087 0. Residual 6 55.72093 9. Total 7 172 CoefficientsStandard t Stat P-value Lower 95% Upper Lower Uppe Error 95% 95.0% 95.0% Intercept 26.87209 3. 6. 0. 17.25662 36.48757 17.25662 36.4 Performance -2.32558 0. -3.53848 0. -3.93375 -0.71741 -3.93375 -0.7 There is a relationship, p .05 Question 2 Needs Grading A department chair in an academic department wanted to know if there was a difference between springand fall enrollment in his department. The department offered the same six courses both semesters. What test should he conduct to determine if there is a significant difference in the enrollment between the semesters? Write up the results and determine what do the results mean? Here is the data set: Spring Fall 50 40 28 42 30 44 39 45 40 25 25 30 Selected Mean 35.33 and 37.67Variance 87.87 and 67.47Observation 6 and 6Df 9Test statistic t Answer: -0.4587 Correct An