Question

Q1. A stimulus is being examined to determine its effect on systolic blood pressure. 18 men participate in the study. Each man’s systolic blood pressure is measured both before and after the stimulus is applied. The following statements input the data:

SBPbefore 120 124 130 118 140 128 140 135 126 130 126 127 129 133 136 128 120 125

SBPafter 128 131 131 127 132 125 141 137 118 132 129 135 133 134 133 134 130 140

Is there a significant difference in systolic blood pressure BEFORE AND after treatment? Run the appropriate test at a 5% level of significance.

a) Hypotheses

b) Compute test statistic

c) Degree of freedom

d) Critical value from T-table

e) P-value

f) Conclusion (circle one)

                   Accept H0                         Reject H0

Answer 1

Ans: SBP before SBP affer de Before-affer 120 20 من لد اه| 31 ا13 150 )12 و ماها ( 132 ر 122 ) 26 ) 6 ا ن 3 )2( کن و 30 )19 ) 32 129 در 2 ي که | )22 29 )33 23 باد ا لر ان ( 133 20 باد ) 140 )20 - کد اما |

E = -1.39 JE - - -1.37 9 16-039712 a) Ho: Md = 0 vs Hot 240 5.772 n- Test statistic ILI - d - M Silon -1,390 5.772/18 - & F-1,022 Degoree of freedom - n1 = 18-1 = [17] T critical value = talent - 40085, 17 e p-value - (0.3211 ) Strice p-value a (0.05) (Probe greater than a), we fail to refect Ho. 8, e (Accept Ho