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Show transcribed image text 7.8 Probability: Problem 4 Previous Problem Problem List Next Problem (1 point) Suppose that, after measuring the duration of many telephone calls, a telephone company found their data was well- approximated by the density function p(x) = 0.1 e-0.1x, where x is the duration of a call, in minutes. (a) What percentage of calls last between 3 and 4 minutes? Percent percent (b) What percentage of calls last 3 minutes or less? Percent = percent (c) What percentage of calls last 5 minutes or more? Percent = percent (d) What is the cumulative distribution function, P(t)? P(t) =
7.8 Probability: Problem 4 Previous Problem Problem List Next Problem (1 point) Suppose that, after measuring the duration of many telephone calls, a telephone company found their data was well- approximated by the density function p(x) = 0.1 e-0.1x, where x is the duration of a call, in minutes. (a) What percentage of calls last between 3 and 4 minutes? Percent percent (b) What percentage of calls last 3 minutes or less? Percent = percent (c) What percentage of calls last 5 minutes or more? Percent = percent (d) What is the cumulative distribution function, P(t)? P(t) =