STAT CLASS \\\\\\\

Question

The probability of a tourist visiting an area cave is 0.70 and of a tourist visiting a nearby park is 0.61. The probability of visiting both places on the same day is 0.41.

The probability that a tourist visits at least one of these two places is

Answer 1

A = visiting an area cave

B = visiting a nearby park

P(A) = 0.70

P(B) = 0.61

P(A and B) = 0.41

We will use the addition rule to solve for P(A or B).

P(A or B) = P(A) + P(B) - P(A and B) = 0.70 + 0.61 - 0.41 = 1.31 - 0.41 = 0.90

The probability that a tourist visits at least one of these two places is 0.90.