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. What percentage of calls last between 2 and 3 minutes? Percent = percent What percentage of calls last 2 minutes or less? Percent = percent What percentage of calls last 4 minutes or more? Percent = percent What is the cumulative distribution function, P(t)? P(t) =

a) 7.79%

b) 67.03%

c) Cumulative Distribution Function

Step-by-step explanation:

We are given the following in the question:

where x is the duration of a call, in minutes.

a) P( calls last between 2 and 3 minutes)

b) P(calls last 4 minutes or more)

c) cumulative distribution function

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent