If John Has Schizophrenia,how Likely Is It That His Dizygotic

question 254

Multiple Choice

If John has schizophrenia,how likely is it that his dizygotic twin brother will also have schizophrenia?

• A) John's brother will also have schizophrenia.
• B) There is a 38% probability that John's brother will have schizophrenia.
• C) There is an 18% probability that John's brother will have schizophrenia.
• D) John's brother will not have schizophrenia.

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Definitions:

Bivariate Distributions

Probability distributions that involve two random variables, analyzing the correlation and dependencies between them.

Expected Values

The predicted value of a variable, calculated as the sum of all possible values each multiplied by the probability of its occurrence.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.

Mean

Mean is the arithmetic average of a set of numbers, calculated by dividing the sum of these numbers by the count of numbers in the set.