Question

P(A) = 0.60, P(B) = 0.30, and P( A and B) = 0.15. What is P(A or B)?

Answer 1

A. 0.75

Explanation:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.60 + 0.30 - 0.15

P(A or B) = 0.75

Answer 2

Option A is correct

`\text{P(A or B)}` = 0.75

Explanation:

Given that:

P(A) = 0.60, P(B) = 0.30, and P( A and B) = 0.15.

Using the formula:

`\text{P(A or B)} = \text{P(A)}+ \text{P(B)}- \text{P(A and B)}`

Substitute the given values we have;

`\text{P(A or B)} = 0.60+0.30-0.15`

⇒
`\text{P(A or B)}  = 0.90-0.15 = 0.75`

Therefore, the value of
`\text{P(A or B)}` is, 0.75