A Physician Observes the Number of Lesions on Subjects Who

Multiple Choice

A physician observes the number of lesions on subjects who regularly used tanning salons. Let X be the number of lesions observed. The physician found that X had the following probability distribution.
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$$\begin{array} { | l | l | l | l | l | l | } \hline \text { Value of } \boldsymbol { X } & 0 & 1 & 2 & 3 & 4 \\\hline \text { Probability } & 0.05 & 0.1 & 0.25 & 0.30 & 0.30 \\\hline\end{array}$$ What is the probability that a randomly chosen subject has at least three lesions?

A) 0.3
B) 0.4
C) 0.6
D) 0.7