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15 May, 00:21

The time (in minutes) between telephone calls at an insurance claims office has the exponential probability distribution:

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  1. 15 May, 03:06
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    The time (in minutes) between telephone calls at an insurance claims office has the exponential probability distribution

    f (x) = 0.50 e-0.50x for x ≥ 0.

    what is probability of 30 seconds or less between phone calls.

    If this is the complete question.

    First, convert 30 seconds to. 5 minutes. The mean time between phonecall is u=2.

    P (x is less than. 5) 1-e^5/2 = 0.2212

    So the answer was approximately 22%.
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