1 answer

Phone calls that come to the customer service number are independent. Average waiting time until the...

Question:

Phone calls that come to the customer service number are independent. Average waiting time until the fifth phone call is 10 minutes.

a.Find the average waiting time between any two consecutive phone calls.

b. Find the variance of the waiting time until the fifth phone call to customer service

.c. Find the variance of the waiting time until the first phone call to customer service.

d. Find the 80th percentile of the waiting time until the first phone call.


Answers

The average uniting time betuoten any to consecutive phone call! is no of calli ime 니 1o mean: 6 5 16+4totGi3f 5 レ The Vaciance of umilhing tine uill hone ral) to customes sexvice is o be couseupvasianteo d) Pesten-tile no of data elements is no of calltime 2 goメno , of data loo elements o-SHI t Obseǒ va ti on is th go fe&cntile soth pescenti le of ceaitiog time is 2

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