86 Suppose that the length of long distance phone calls

Last updated: 11/2/2023

86 Suppose that the length of long distance phone calls measured in minutes is known to have an exponential distribution with the average length of a call equal to eight minutes a Define the random variable X b Is X continuous or discrete c X d e d f Draw a graph of the probability distribution Label the axes g Find the probability that a phone call lasts less than nine minutes h Find the probability that a phone call lasts more than nine minutes i Find the probability that a phone call lasts between seven and nine minutes nother on average what would you expect the total to be Why