Sixty percent of the students at a certain school wear neither a ring nor a necklace. Twenty percent wear a ring and 30 percent wear a necklace. If one of the students is chosen randomly, what is the probability that this student is wearing

Question

Linda Moses

Mathematics

25 November, 15:09

Sixty percent of the students at a certain school wear neither a ring nor a necklace. Twenty percent wear a ring and 30 percent wear a necklace. If one of the students is chosen randomly, what is the probability that this student is wearing

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Answers (1)

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Kason Nixon · Answer 1

Probability would be 40 % or 0.4

Step-by-step explanation:

Sixty percent of the students at a certain school wear neither a ring nor a necklace.

Since the given event and the event asked are mutually exclusive events (that is they both cannot occur together) the formula to subtract the value of the given probability from one will be used.

Probability (the students wear a ring or a necklace or both) = 1 - P (not wearing anything)

Probability (the students wear a ring or a necklace or both) = 1 - 0.6 = 0.4