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21 May, 17:11

We believe that 93 % of the population of all Business Statistics I students consider statistics to be an exciting subject. Suppose we randomly and independently selected 28 students from the population. If the true percentage is really 93 %, find the probability of observing 27 or more students who consider statistics to be an exciting subject.

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  1. 21 May, 17:53
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    the probability of observing 27 or more students 0.818

    Step-by-step explanation:

    given data

    sample n = 28 students

    population = 93%

    to find out

    the probability of observing 27 or more students

    solution

    we will find Z value for CI 93%

    from z table we get Z is 1.812 for Cl 93%

    so P (27 ≤ Z ≤ 28)

    we know Z = 0.182

    = 1 - 0.182

    = 0.818

    the probability of observing 27 or more students 0.818
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