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    Probabilities - Bell Telephone

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    The Bell telephone co. surveyed an apartment building with 500 units to find out who subscribes to their service. Turns out 70% of the units use Bell's service.

    Find the probability that less than 340 units are using Bell services so we are looking for:
    P(X<340)
    Z= 340-350/10.25=-0.98

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    https://brainmass.com/statistics/probability/determining-probability-binomial-distribution-3397

    Solution Preview

    From the example, we know that X~(350,10.25^2)
    we transfer it into Z= 340-350/10.25=-0.9756
    Therefore the ...

    Solution Summary

    The solution addresses the Bell telephone co. surveyed an apartment building with 500 units to find out who subscribes to their service. Turns out 70% of the units use Bell's service.

    $2.49

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