Let X Represent the Amount of Time Till the Next

Multiple Choice

Let X represent the amount of time till the next student will arrive in the library parking lot at the
University.If we know that the distribution of arrival time can be modeled using an exponential
Distribution with a mean of 4 minutes (i.e.the mean number of arrivals is 1/4 per minute) , find
The probability that it will take between 2 and 12 minutes for the next student to arrive at the
Library parking lot.

A) 0.049787
B) 0.556744
C) 0.606531
D) 0.656318