Question

# the average height is 100 , with a variance of 1.21. The probability that you will...

the average height is 100 , with a variance of 1.21. The probability that you will randomly encounter with a height of 100 is closest to:

 0.0000 0.5000 0.5113 1.0000 None of the choices is correct.

Solution:

Random variable X : Height

Height can take any value within a certain range.

So , it is a continuous random variable.

In this case , the probability at a particular value is supposed to be 0.

We can find only cumulative probabilities.

So ,

P(X = 100) = 0.00000

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