An investigator predicts that individuals that fit the Type A Behavior Pattern (

Question

An investigator predicts that individuals that fit the Type A Behavior Pattern (highly competitive and time conscious) will have higher scoses on a questionnaire measare of need for achicvement than individuals that fit the Type B Behavior pattern (absence of Type A qualities). The investigator collects need for achievement scores from 10 Type A subjects and 10 Type B subjects. Higher scores reflect greater levels of need for achievement. Select the appropriate nall and alternate hypothesirs Type AType B 12 10 10 15 12 16 10 A. Select the appropriate null and alternate hypothesis B. Test the hypothesis you selected in part (A) and draw coaclusions. C. Test the equal variance assumption. Make sure you setup the null and alternate hypothesis, report the p-value and draw conclusions. D. Test the normal distribution assumption. Make sure you setup the null and alternate hypothesis, report the p-value

Explanation / Answer

Hypothesis:

Ho: muA <= muB

vs

H1: muA>muB

Two-Sample T-Test and CI: group1, group2

Two-sample T for group1 vs group2

N Mean StDev SE Mean
group1 9 11.56 2.60 0.87
group2 9 6.89 1.90 0.63

Difference = mu (group1) - mu (group2)
Estimate for difference: 4.66667
95% lower bound for difference: 2.77433
T-Test of difference = 0 (vs >): T-Value = 4.34 P-Value = 0.000 DF = 14

p value < alpha = 0.05

we reject null hypothesis

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.