“M” and “N” are two events P(M) = 0.70, P(N) = 0.50, P(M and N) = 0.40. Find the probability of P(M or N) A) 0.90 B) 0.70 C) 0.80 D) 1.20

asked Mar 1, 2022 126k views

12 votes

“M” and “N” are two events P(M) = 0.70, P(N) = 0.50, P(M and

N) = 0.40. Find the probability of P(M or N)

A) 0.90
B) 0.70
C) 0.80
D) 1.20

by Esmir

3.2k points

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7 votes

Answer:

$P(M\ or\ N) = 0.80$

Explanation:

Given

P(M) = 0.70

P(N) = 0.50

$P(M\ and\ N) = 0.40$

Required

Calculate P(M or N)

This is calculated using:

$P(M\ or\ N) = P(M) + P(N) - P(M\ and\ N)$

The equation becomes

$P(M\ or\ N) = 0.70 + 0.50 - 0.40$

$P(M\ or\ N) = 0.80$

Teodoro answered Mar 7, 2022

3.2k points

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