​Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 640 randomly selected adul

Question

​Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 640 randomly selected adults showed that 99.2​% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantly​ high, then state a conclusion about the original claim.

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Evelyn 1 month 2021-10-15T00:31:50+00:00 1 Answer 0 views 0

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    2021-10-15T00:33:00+00:00

    Answer:

    Given:

    Sample size, n = 640

    Since result showed that 99.2​% of them would erase all of their personal information online if they could, we have:

    P’ = 99.2% = 0.992

    Let’s take p = 50%

    Our null and alternative hypothesis will be :

    H0 : u = 0.5

    H1 : u > 0.5

    In this case we are to check for the test statistic.

     \frac{P' - p}{\sqrt{p(1-p)/n}}

     = \frac{0.992 - 50}{\sqrt{50(1-50)/640}}

    = 24.9

    Test statistic, Z = 24.893

    In conclusion, the results are significantly high, which suggets there is suffcient evidence to support the claim that most adults would erase all of their personal information online.

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