anonymous
  • anonymous
If the probability that a person wears glasses is 0.36 and the probability that a person is afraid of sharks is 0.61, what is the probability that a randomly selected person will wear glasses and be afraid of sharks? Round your answer to the nearest hundredth. A. 0.49 B. 0.22 C. 0.97 D. 0.25
Mathematics
schrodinger
  • schrodinger
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sohailiftikhar
  • sohailiftikhar
0.25
anonymous
  • anonymous
OK. Are you sure?
sohailiftikhar
  • sohailiftikhar
not very ...

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anonymous
  • anonymous
OK
anonymous
  • anonymous
@JoannaBlackwelder do you happen to know this one?
JoannaBlackwelder
  • JoannaBlackwelder
To find the probability of both happening at the same time, multiply the probabilities together.
anonymous
  • anonymous
Ok. That would equal .2196. So B is the correct answer?
JoannaBlackwelder
  • JoannaBlackwelder
Yep :-)
anonymous
  • anonymous
thanks so much!
JoannaBlackwelder
  • JoannaBlackwelder
No worries :-)
sohailiftikhar
  • sohailiftikhar
JoannaBlackwelder why we have to multiply them is it rule or something like that trick..?
JoannaBlackwelder
  • JoannaBlackwelder
Yes, to find the probability that two different things will happen at the same time, multiply the probabilities together every time.
sohailiftikhar
  • sohailiftikhar
hmmm...so if there are 70% students who eat chocaletes and 60% who eat tophies then those who eat both are .. A)30% B)40% C)10% D)12%

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