A researcher decides to analyze the effects of nutrition on personality. He collects 7 pairs of...

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A researcher decides to analyze the effects of nutrition onpersonality. He collects 7 pairs of identical twins and randomlyassigns one twin from each pair to a controlled diet condition. Thetwins assigned to the other condition are allowed to eat whateverthey please. The following are scores on a standardized personalityinventory:
Personality inventory scores for twins in controlled dietcondition:
10, 9, 4, 3, 8, 6, 7
Personality inventory scores for twins in eat-what-you-wantcondition:
16, 11, 9, 4, 5, 9, 12
NOTE: The order of the scores is important here. The first scorein the controlled diet condition (10) should be paired with thefirst score from the other condition (16), etc.
Hint: This is a two-tailed test.
Null hypothesis:
Alternative hypothesis:
Statistical test (be specific!):
Significance level: alpha = .01
degrees of freedom:
Critical region (t-value):
Calculated t:
Decision:

Answer & Explanation Solved by verified expert

4.3 Ratings (917 Votes)

This will an independent 2 samples ttest since both data setshave different individual Test will be conducted for difference inpopulation meansLet twin 1 be the controlled diet and twin 2 See Answer

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