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A popular myth is that for identical twins, one is the nice one and one is the mean one. Four-teen pairs of identical twins were
A popular myth is that for identical twins, one is the "nice one" and one is the "mean one." Four-teen pairs of identical twins were randomly selected and given a personality test for measuring "niceness" or "meanness" where the higher score implies "niceness" and a lower score implies "meanness." At the 1% significance level, is there a difference in the personality scores between the identical twins.
what is the null and alternative hypothesis?
what is the observed value?
what is the p-value
add JMP output.
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