(c) Initial Setup: Suppose X ~ Exp(? = 3/7). Find P(X > 1.2).
Problem: Find any and all errors in the following code / results provided that are
supposed to solve the initial problem. If you find an error, state what the correct
value(s) should be.
> pexp(1.2, rate = 3/7, lower.tail = FALSE)
[1] 0.5979275