Suppose That the Random Variable $x$ Has an Exponential Distribution With $\theta = 1.5$

Multiple Choice

Suppose that the random variable $x$ has an exponential distribution with $\theta = 1.5$ . Find the probability that $x$ will assume a value within the interval $\mu \pm 2 \sigma$ .

A) 864665
B) $.950213$
C) 049787
D) .716531