1. ## Probability Distribution

A grocery has their employees stock groceries. The mean is 1100 pounds and a standard deviation of 100. If two employees are randomly selected what is the probability that the weight of groceries they stock will be less than 50 pounds.

My best guess is :
Normalcdf(1050, 1150, 1100, 100)

2. ## Re: Probability Distribution

The sum of two random variables, one normally distributed with mean $\mu_1$ and standard deviation $\sigma_1$, the other with mean $\mu_2$ and standard deviation $\sigma_2$, is normally distributed with mean $\mu_1+ \mu_2$ and standard deviation $\sqrt{\sigma_1^2+ \sigma_2^2}$.