Question

A sock producer is interested in how uniform the length of socks that are produced at his factory is. It is known that the sock length follows a normal distribution with a mean of 20 cm and a standard deviation of 10.5 cm.

Answer 1

Solution:

$X$ denotes the length of socks.

$X\sim N(\mu,\sigma)$

Given, $\mu=20\ cm,\sigma=10.5\ cm$