Let x be a standard normal random variable. find p (-1.20 < x < 1.74). express your answer as a decimal.

Question

Mathematics

Kameron Alexander

19 April, 12:47

Let x be a standard normal random variable. find p (-1.20 < x < 1.74). express your answer as a decimal.

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Donavan · Answer 1

Given that x is a standard normal random variable.

P (-1.20 < x < 1.74) = P (x < 1.74) - P (x < - 1.20)

= P (x < 1.74) - [1 - P (x < 1.20) ] = P (x < 1.74) + P (x < 1.20) - 1

= 0.95907 + 0.88493 - 1 = 0.844