Question

Pulling my HAIR...Please help

Find P(11 < x < 16) when mu = 15 and sigma = 3.

Answer 1

Basically find the probability if x is 11 and if x is 16 separately. then find the z scores for each. And subtract the smaller z score from the the larger one.

Answer 2

thats your answer

Answer 3

Still confused.

Answer 4

Ok so you need to know: \[X-Mean \div \sigma\]. For you X is both 11 and 16. So you plug each one into the equation separately and then refer to the z-chart. Once you get both of your z-scores, you take the larger number and subtract the smaller number from it.