Question

Find the probability associated with the standard normal random variable z:

P(z>5)

I think its 1 but im not sure please help me!

Answer 1

Well, approximately 99% of any normally distributed population lies within 3 standard deviations of the mean. You're asking about the probability that some point lies outside \(\textit{five}\) standard deviations.

Answer 2

so is it 0?

Answer 3

?

Answer 4

hello?

Answer 5

Right, the probability is so small it might as well be 0.