Week 2 DQ 2 - graded PDF

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Dominique Dennis BST 322 Week 2 DQ: 2 1. Null hypothesis: There is not a difference between the effectiveness of pain alleviation in patients with facial shingles using rest or acupuncture. Alternative hypothesis: There is a difference the effectiveness of the pain alleviation in the patients with facial hair shingles using rest or acupuncture. 2. Two sample T hypothesis test: μ1 : Mean of Acupuncture μ2 : Mean of Rest μ1 - μ2 : Difference between two means H 0 : μ1 - μ2 = 0 H A : μ1 - μ2 ≠ 0 (with pooled variances) Hypothesis test results: Difference Sample Diff.

Std. Err.

μ1 - μ2

0.98441132 22

-0.91666667

DF

T-Stat -0.93118257

P-value 0.3619

T- stat= .9311

3. The t stat is .93 which is less than the critical level. The p-value is .36 which is above the alpha level of .05, this mean that we fail to reject the null hypothesis and that there is difference in the effectiveness of pain alleviation in the patients with facial shingles using the rest or acupuncture. 4. The pool variance test is used is used when the two population’s variance are equal. We were given the equal variances so we used it. We did not use separate variance for the t test because it is used when the variances are unequal....