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20 May, 08:45

Sixty-seven percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 20 of them have looked at their score in the past six months? 0.450 0.550 0.692 0.142

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  1. 20 May, 12:24
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    0.692.

    Step-by-step explanation:

    This is a Binomial Probability of Distribution with P (success) = 0.67. Prob success > = 20), 31 trials.

    From Binomial Tables we see that the required probability = 0.692.
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