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shymitch32
28.06.2019 •
Mathematics
The eco pulse survey from the marketing communications firm shelton group asked individuals to indicate things they do that make them feel guilty (los angeles times, august 15, 2012). based on the survey results, there is a .39 probability that a randomly selected person will feel guilty about wasting food and a .27 probability that a randomly selected person will feel guilty about leaving lights on when not in a room. moreover, there is a .12 probability that a randomly selected person will feel guilty for both of these reasons.a. what is the probability that a randomly selected person will feel guilty for either wasting food or leaving lights on when not in a room or both (to 2 decimals)?
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Ответ:
The probability that a randomly selected person will feel guilty for either wasting food or leaving lights on when not in a room or both is .54
Further explanationProbability is the likeliness of the occurrence of an event.
Let :
P(A) = Probability of feeling guilty about wasting food = .39
P(B) = Probability of feeling guilty about leaving lights on = .27
P(A∩B) = Probability of feeling guilty for both of these reasons = .12
The probability that a randomly selected person will feel guilty for either wasting food or leaving lights on when not in a room or both is :
P(A∪B) = P(A) + P(B) - P(A∩B)
P(A∪B) = .39 + .27 - .12
P(A∪B) = .54Learn moreDifferent Birthdays: link
Dependent or Independent Events: link
Answer detailsGrade: High School
Subject: Mathematics
Chapter: Probability
Keywords: Person, Probability, Outcomes, Random, Event, Room, Wasting, Food
Ответ: