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12 June, 05:05

A random sample of adults showed that of them have shopped at least once on the Internet. What is the (approximate) probability that a randomly selected adult has shopped on the Internet? Round your answer to three decimal places.

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  1. 12 June, 07:31
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    P = number of adults who have shopped at least once on the internet / number sampled adults

    Step-by-step explanation:

    Step 1

    Let X be the number sampled adults

    Let Y be the number of adults who have shopped at least once on the internet.

    Let P be the probability that a randomly selected adult has shopped on the Internet.

    Step 2

    P = number of adults who have shopped at least once on the internet / number sampled adults

    P = Y/X

    An example:

    If X is 1000 adults and Y is 200 adults therefore P = 200/1000 = 0.2

    One can therefore infer that approximately 0.2 of the population surfs the internet at least once in a week.
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