Enny the barber owns a one-chair shop. at barber college, they told benny that his customers would exhibit a poisson arrival distribution and that he would provide an exponential service distribution. his market survey data indicate that customers arrive at a rate of 4.0 per hour. it will take benny an average of 12 minutes to give a haircut. based on these figures, find the following: a. what is the average number of customers waiting? (round your answer to 4 decimal places.)

average number of customers waiting

b. what is the average time a customer waits? (round your answer to nearest whole number.)

average time a customer waits minutes

c. what is the average time a customer is in the shop?

average time a customer minutes

d.
what is the average utilization of benny's time? (round your answer to the nearest whole percent.)

average utilization %

what is the actual question i have no idea how to answer this w/o a question

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.