# Sec 9.4.. - Sec 9.4 Two means Dependent Samples(Matched...

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Sec. 9.4 Two means: Dependent Samples (Matched pairs) Test Statistic: df: n-1 P-value: Can be obtained using Technolo Critical Values: Can be obtained using Technolo Confidence Interval: df: n-1 d d d t s n d d E d E /2 d s E t n

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) ogy or Table A3(t- Distribution) ogy or Table A3(t-Distribution) 1
Sec. 9.4 Two means: Dependent Samples Assume that the paired sample data are simple random samp and the differences have a distribution that is approximately n #14 Use a 0.01 significance level to test for a difference between the measurements from the two arms. Right Lef Arm Arm d= (first-second) 102 175 -73 = d d -72.2 101 169 -68 9.3112835 94 182 -88 n= 5 79 146 -67 79 144 -65 Step 1: Ho: µd=0 support H1: µd≠0 claim not support ?_? = d d d t s n d d E d E E

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Step 2: TS t= -17.338545 Step 3: P-value Method 0.01/2 0.01/2 lef side ar 0.0000325 P-value= 0.00006494 Step 4: P-valve<alpha;0.000064<0.01 Reject H0 Step 5: there is a difference between the measurements fro #18 Using a 0.01 significance level, is there sufficient evid the claim that Captopril is effective in lowering systo There is sufficient evidence to support the claim d d d t s n
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