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7 February, 01:56

In a group of 1500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What is the probability that a person chosen at random from this group has type B blood?

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  1. 7 February, 03:21
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    When calculating probability you need to remember that probability is:

    something that you are observing divided by total number of participants.

    The number you get is relative value (has value between 0 and 1) and if you want to get it in percentage (more clearly) just multiply it with 100.

    In this case we are observing blood type B persons. Number of them is 165.

    Total number of persons is 1500. Therefore our calculation looks like this:

    165/1500 = 0.11 or the probability is 0.11*100=11%
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Home » Mathematics » In a group of 1500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What is the probability that a person chosen at random from this group has type B blood?
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