statistics with normal variables

Question

Given that x is a normal variable with mean μ = 42 and standard deviation σ = 6.3, find the following probabilities. (Round your answers to four decimal places.)

(a)  P(x ≤ 60)

(b)  P(x ≥ 50)

  

(c)  P(50 ≤ x ≤ 60)

  

Answer 1

There's a lot of ways to solve these probabilities.

1. graphing calculator (TI83/84)
2. normal tables
3. some other technology (software or website)

One weblink you could use to calculate these probabilities is:

http://onlinestatbook.com/2/calculators/normal_dist.html