Question

part a and part b pleaseand thx

Independent random same seedrom normal populations produced the means and standard von shown to the night a Assung vonances, conduct the best. () - 10 b. Find depret the concevo (2) Sample 1 Sample 55 a. Find the best (Round to two decimal places as needed)

Answer 1

si 3.7 2 solution of n = 17, 12 = 12 , du = 515, atz- 712 82 z 9.4 so combined estimate of variancers (8²) = nys, 24 M24) Sz? nith 2-2 (17-1)X (3,73² + (1 21 X (6,47 17+12-2 12 z 16 Hool-M220 Ven. Milz to so t-statistics x, ł in tu, tu2-2, 2,412 32(thth 'ha t-stat 5.5-712 = | 16x (+2+1/2) 1-5001 t-stat = 1.1272 Rounded value o t - up to 2-clocê mal t-stat 1113 t k-value at n, tl₂-2=17112 -2 = 27df =P[177 1.13] = 12604 Here p-value is 1268 u is greater than 2010 so we fail to Reject no hi conclude that there is no difference in mean, Me & My,

90%. Confidence interval for Mill, = (xrest 1 st the the turne 2, 179122, 18 Here Nie = 1.7033 = -1.71 1.500 IX 1.7033 = -1,77 2.5607 = L-4,2687, Here we also see that Internal contain value o conclude that is a la not significantly different. 8607] so we