Hi what equations are needed for this?
.. cricket LTE 5:37 PM 21%EJ' classroom.google.com Private 6 PDF . K Open with Annotate with Kami v Hypothesis test for slope of least squares regression line Hospital nurses sampled records of 58 surgery patients. They wondered if length of surgery (in hours) might be related to the length of the hospital stay (in days). To nd out, they created the regression analysis shown. Dependent variable is: Hospital Stay Variable Coefcient 5.9. of coeff Constant 0.515681 0.3116 Surgery Time 1.28997 0.09115 a. Write the linear regression equation relating surgery time to length of hospital stay. b. Nurses want to use a ttest for slope to test if there is a relationship between length of surgery and hospital stay. Assume conditions for inference are met. Write down the hypotheses to be used in the ttest for slope. What is the tvalue test statistic and P-value? c. Based on the P-value you found, what conclusion should the nurses make? all cricket LTE 5:36 PM 21% 0 classroom.google.com - Private PDF K Open with Annotate with Kami . . . Team Names: No more than 3 in a team CALCULATOR PRACTICE DIRECTIONS: You need to compute each of the following using your calculator. CALCULATOR TASK ANSWER 1. Conduct the appropriate hypothesis test. test statistic p = .2 p = , Ha: df? pvalue 4. Conduct the appropriate confidence interval. x = 76.4 ft, Sx = 2.5 ft, n = 27 Confidence 90% 5. Conduct the appropriate hypothesis test. test statistic P1 = 50 df? 100' P2 = 37 111' Ha: > pvalue 6. Conduct the appropriate confidence interval. P1 = 30 127 ' 153' P2 = , 95% confidence 7. Conduct the appropriate hypothesis test. x1 = 101.4 lbs, Sx, = 2.5 lbs, n = 31 test statistic X2 = 99.6 lbs, Sx2 = 3.9 lbs , n = 34 df? Ha: # pvalue 8. Conduct the appropriate confidence interval. *1 = 10.4 cm, Sx, = 1.6 cm, n = 31 X2 = 9.9cm, Sx2 = 0.9 cm , n = 34 Confidence 95% 9. Conduct the appropriate hypothesis test. Yes No Male 67 73 test statistic Female 81 79 df? pvalue 10. Conduct the appropriate hypothesis test. Observed 4 15 14 17 test statistic Expected 20.3 15.1 9.5 5.1 df? pvalue 11. Enter the following list of values and compute the 5 number summary. MIN (12, 14, 19,8 ,9,16,7,12,1) Q1 MEDIAN Draw a boxplot: 03 MAX Sx Team Names: No more than 3 in a team 12. Enter the follow X = minut Page 50 56 62 63 65 70 Y = increas 15 219 + 17 20 +al cricket LTE 5:36 PM 21% % classroom.google.com - Private (12, 14, 19,8 ,9,16,7 ,12,1) Q1 MEDIAN Draw a boxplot: Q3 MAX Sx Due Tomorrow, 1:59 PM Team Names: No more than 3 in a team 12. Enter the following list of values, build a scatter plot and describe the association. X = minutes studying 50 51 56 63 65 70 Y = increase in score 11 14 14 15 19 17 20 13. Compute the correlation for #12's data. 14. Compute the regression equation for #12's data; be sure to define any variables you use. 15. Build the residuals plot for #12's data. What does the residuals plot look like? (sketch it below) What does this tell you about the model (equation) you created in #14? 16. Compute the linear regression T Test and a 90% confidence interval for #12's test statistic data. df? pvalue Interval ( 17. Calculate the shaded area: M = 23 x 0 = 2.667 x = 20 18. Find the z-score of the 85th percentile. 19. Calculate the probability of exactly 11 successes out of 20 trials when the probability of success is p = 0.43 20. Calculate the probability of at least 11 successes out of 20 trials when the probability of success is p = 0.43 Posted May 6 Topics NOT on formula sheet
