Suppose X Is a Uniform Random Variable with C = $\sigma = 2.24$

Multiple Choice

Suppose x is a uniform random variable with c = 20 and d = 80. Find the standard deviation of x.

A) $\sigma = 2.24$
B) $\sigma = 17.32$
C) $\sigma = 28.87$
D) $\sigma = 2.89$