Problem 5.21 NewboldSee 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?

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- Nov 29th 2012, 01:53 AMjacob93Normal 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? - Nov 29th 2012, 02:06 AMMarkFLRe: Normal distr
a) The

*z*-score for 0.4 is $\displaystyle z=\frac{0.4-0.2}{0.05}=4$, but your table only goes up to $\displaystyle z=3.09$ so we would use the approximation:

$\displaystyle P(X>4)=0$ - Nov 29th 2012, 02:13 AMMarkFLRe: Normal distr
Using numeric integration, I find:

$\displaystyle P(X>4)\approx0.00003167124184$ - Dec 4th 2012, 12:20 PMjacob93Re: Normal distr
Sorry, I didn't say that I was trying to do e. (But yes, in a. P ≈ 0).