JEE MATHEMATICS MCQ: STATISTICS

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Application +4 | -1

Three rotten apples are mixed accidently with seven good apples and four apples are drawn one by one without replacement. Let the random variable

X

denote the number of rotten apples. If

\mu

and

\sigma^{2}

represent mean and variance of

X

, respectively, then

10\left(\mu^{2}+\sigma^{2}\right)

is equal to

View answer and explanation

Correct option: D

Option D (20) is correct because the calculated value of

10(\mu^2 + \sigma^2)

based on the mean and variance of the number of rotten apples drawn is 20.

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