CORRELATION ANALYSIS: ASSESSMENT Direction: Answer the following problems. 1) Show the scatter diagram of the given: A mathematics placement test is given to all entering freshmen at a small college. The placement test scores and the final grades for 10 students who took the regular course were recorded as follows: Placement test: 50. 35, 55. 35. 90. 90, 60, 60. 55, 65 Course grade: 53. 61. 68. H, 79, 54. 48, 7]. 53. 57 ) Facebook X Course Hero X Recent designs - Can x new pricelist - Infogra x (4) Facebook Business x Recent designs C coursehero.com/qa/wait/31685784/ The corresponding test statistic is t statistic since population standard deviation " is unknown. the t statistic is: t= S Vn Here we have: T = Sample mean = 14.5 H = Assumed population mean = 15 s = Sample standard deviation = 1.5 n = Sample size = 60 Putting values we have: t - 14.5-15 1.5 V60 t = -2.58 Here degree of freedom is: df = n-1 = 60-1 df = 59 The corresponding p value is found from t distribution table with df = 59 and t = -2.58 and area to the right since the P - value = P(t > -2.58) = 0.9938 Since P-value > 0.01 which was the significance level therefore we fail to reject the null hypothesis. It means that ther for this model is more than 15. 2) The null and alternative hypothesis are: U fixed-shift = / Rotating-shift 11 .. . . .. 7 lin . .. . . .. Is this answer helpful? Your feedback will help us provide a better solution that statictio ie. Type here to search O