Fred and Ricky Are Identical Twins

question 89

Multiple Choice

Fred and Ricky are identical twins.Lucy and Ethel are fraternal twins.If intelligence is primarily an environmentally-based trait,we would expect that

• A)Lucy's and Ethel's IQ scores would be more similar to each other than Fred's IQ score would be to Ricky's.
• B)Fred's and Ricky's IQ scores would be more similar to each other than Lucy's IQ score would be to Ethel's.
• C)Lucy's and Ethel's IQ scores would be as similar to each other as Fred's IQ score is to Ricky's.
• D)Fred and Ricky would both have lower IQ scores than either Lucy or Ethel.

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Definitions:

Chi-Square Test

A statistical test used to determine if a significant difference exists between the expected frequencies and the observed frequencies in one or more categories.

Independence

The state of being free from outside control or influence; in statistics, it refers to the scenario where the occurrence of one event does not affect the probability of another.

Candy Company

A business enterprise focused on the production and/or sale of candies and confectioneries.

Goodness-Of-Fit

A statistical test used to determine the extent to which observed data match the expected distribution under a specific model.