teacher said it needed to be done using independent sample t test ne relacionsHp

Question

teacher said it needed to be done using independent sample t test

ne relacionsHp thE Peseärcher is entitled to make. (You may use Excel to calculate means variance and standard deviation). 1. An investigator predicts that individuals that fit the Type A Behavior Pattern (highly competitive and time conscious) will have higher scores on a questionnaire measure of need for achievement that individuals that fit the Type B Behavior pattern (absence of Type 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. Type A Type B nlpenbent Syle 12 8 10 10 11 7 15 8 12 5 4 16 7 10 2. An investigator believes that families in Virginia have more children on average than the average ncus data the investigator knows that

Explanation / Answer

Sol:

Ho: TypeA=TYPEB

H1TypeA>TYPEB

one tail t test.

Alpha=0.05

t=3.735

p=0.0008

p<0.05

reject null hypothesis

There is sufficient statistical evidene at 5%level of significance that Type A behaviour pattern will have higher scores than type B

t-Test: Two-Sample Assuming Unequal Variances typeA type B Mean 11.2 7.2 Variance 7.288889 4.177778 Observations 10 10 Hypothesized Mean Difference 0 df 17 t Stat 3.735437 P(T<=t) one-tail 0.000823 t Critical one-tail 1.739607 P(T<=t) two-tail 0.001646 t Critical two-tail 2.109816

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