Problem 5.21 Newbold
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
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).