Question

Use the following information to answer questions 10-13. The Weights of students before the start of a 5-week aerobics class and after thes-week aerobics class are given below. Person Weight Before Weight After 198 194 124 126 ovo AWN 180 165 10) What is the sample standard deviation of the di's, the differences. a) 4.50 b) 5.60 c) 7.83 d) 9.24 e) 1.28 3.33 11) The point estimate of the difference between the means of the populations is: a) 5.75 b) 3.28 c) 6.13 d) 7.34 e) 9.12 12) Consider the following hypothesis test, Ho:He=0 H : >0 The test statistic for the difference between the two population means is: a)-1.11 b) 1.11 C 2.97 @ 3.25 e) 5.80 f) 6.14

Answer 1

198 Weight Before Weight After di 1944 154 151 3 124 126 -2 110 104 6 123 4 155 7 141 129 12 180 165 15 127 162 10) f) 5.33 11) c) 6.13 12) d) 3.25