Which one of these variables is a continuous random variable

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Which one of these variables is a continuous random variable?

A. The time it takes a randomly selected student to complete an exam

B. The number of tattoos a randomly selected person has

C. The number of women taller than 68 inches in a random sample of 5 women

D. The number of correct guesses on a multiple-choice test

Answer: Option A

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Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
Reason (R): The geometric mean between two regression coefficients is the coefficient of correlation.

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A. 0

B. 1

C. 0.4

D. 0.8

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