Thread: Normal distr

Problem 5.21 Newbold
See image

My attempt:
1. See image2

2. Searching for it in this table Public Domain Normal Distribution Table
I find z=0.06


3. Thus, a=0.06

Correct?

a) The z-score for 0.4 is , but your table only goes up to so we would use the approximation:

Using numeric integration, I find:

Sorry, I didn't say that I was trying to do e. (But yes, in a. P ≈ 0).