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14 January, 05:47

Eighty-five mall customers were randomly surveyed across the state to determine if the live entertainment provided had increased the amount of money they spent. Can the probability be found by using the binomial probability formula?

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  1. 14 January, 08:47
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    Yes

    Step-by-step explanation:

    Binomial distribution is valid for trials which consist of only two outcomes, and each trial is independent of the other.

    Here 85 mall customers were randomly surveyed. We have that each customers is independent of the other for the state o determine if the live entertainment provided had increased the amount of money they spent

    Hence probability for each person to say yes can be taken as p and q = 1-p for no reply.

    There are only two outcomes.

    Also n = 85 is sufficiently large to have np or nq >5

    Hence the probability can be found using binomial probability formula provided p = probability for success of a single trial is given.
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