Help am unable to do it, answer all thank you.
(b) Find the P-value for the third alternativeConsider an unbalanced study with six subjects pi # pz)ifr = -0.1761. identified as A, B, C, D, E and G. In the actual (c) Determinboththe P-value andhat sat- study, isfy the following condition: The data are . Subjects A and B are assigned to the first statistically significant but not highly sta- treatment, and the other subjects are as- tistically significant for the second alter- signed to the second treatment. native p2) ifa = 6. (a) Calculate range, IQR, and median of these(b) Find the P-value for the third alternative data. (pi # p2) ifr = -0.2500. (b) Given that the mean of these data is (C) Determineththe P-value andhat sat- 63.50 (exactly) and the standard devia- isfy the following condition: The data are tion is 12.33, what proportion of the data statistically significant but not highly sta- lie within one standard deviation of the tistically significant for the second alter- mean? native/h pz) ifa = 6.42. Independent random samples are selected fromity students take midterm and final exams. two populations. Below are selected summaryn the midterm exam, the mean score is 45.0 statistics. and the standard deviation is 7.00. On the final exam, the mean score is 85.0 with a standard Pop. Mean Stand. Dev. Sample size deviation of 14.00. The correlation coefficient 62.00 10.00 17 of the two scores is 0.64. 2 54.00 6.00 10 Obtain the least squares regression line for us- (a) Construct the 95% confidence interval fong the final exam score to predict the midterm AX - HY. exam score. (b) Obtain the P-value for the alternativeFifty students take two midterm exams. On the ux # #y. Show your work. You will re- first exam, the mean score is 65.0 and the stan- ceiveno creditor simply reporting your dard deviation is 7.00. On the second exam, answer. the mean score is 55.0 with a standard devia tion of 10.00. The correlation coefficient of the 43. Independent random samples are selected from scores is 0.70. two populations. Below are selected summa obtain the least squares regression line for us- statistics. ing the second exam score to predict the first Pop. Mean Stand. Dev. Sample size exam score. 73.00 10.00 14 2 62.50 6.00 8 48. Below is a coordinate system with the regres- sion ling = 12 - 2r. (a) Construct the 95% confidence interval for HX - RY. 12/ (b) Obtain the P-value for the alternative 10- HX # RY. 8 - 44. A regression analysis yields the line 6- y = 32 + 0.4r. 4- N One of the subjects, Racheal hasso and y = 52. 2 3 5 (a) Calculate Racheal's predicted value, (a) Locate the point thatmass andy = 8; (b) Calculate Racheal's residual. put an A at that point. 45. A regression analysis yields the line (b) Locate the point thathas ande = 2; put a B at that point. 1 = 18 + 0.25r. (c) Locate the point that has 6 ande = One of the subjects, Mary, shas10 andy = -2; put a Cat that point. 32. (d) Locate the point that has6 ande = -4; put a D at that point. (a) Calculate Mary's predicted value, (e) Draw the line that represents all points for (b) Calculate Mary's residual. which = -2. 13(f) Given that = 3, what is the valueof 51. Children in grade six take two exams each: one on math and one on vocabulary. For each exam, 49. Below is a coordinate system with the regresarger scores are better. sion ling = 12 - 2r. One child, Donald, scores 55 on the math test and 75 on the vocabulary test. 12 - . Betty says, "Donald's two scores are 10- equally good because each score is 5 8- points above its exam's mean. . Debra says, "Donald is better at math; here is why. If you calculate the regression line for using vocabulary score to predict N A math score, Donald's actual score on the math exam is 4 points higher than his pre- 0 dicted score." 3 Use the above information to obtain the regres- (a) Locate the point thathas andy = 6; sion line to which Debra refers. put an A at that point. (b) Locate the point thathasi and = 4; put a B at that point. (c) Locate the point that has 8 ande = -2; put a Cat that point. (d) Draw the line that represents all points for which = -3. (e) Given that = 4, what is the valueraf 50. Children in grade six take two exams each: one on math and one on vocabulary. For each exam, larger scores are better. One child, Eric, scores 40 on the math test and 60 on the vocabulary test. . Eric scored 5 points below the mean on the math exam. . Eric scored 10 points above the mean on the vocabulary exam. . Diane obtains the regression line for using the math score to predict the vocabulary score. According to her line, Eric scored 10 points lower than predicted. Use the above information to obtain Diane's re- gression line. 14
