Mathematics, 20.03.2020 17:19, gray69

The phone lines to an airline reservation system are occupied 40% of the time. Assume that the events that the lines are occupied on successive calls are independent. Assume that 10 calls are placed to the airline.

a. What is the probability that for exactly three calls, the lines are occupied?

b. What is the probability that for at least one call, the lines are not occupied?

c. What is the expected number of calls in which the lines are all occupied?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:30, AriesTwice

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Answers: 1

continue

Mathematics, 21.06.2019 22:00, dest8860

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

Answers: 1

continue

Mathematics, 22.06.2019 00:30, sanfordl

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Answers: 2

continue

Mathematics, 22.06.2019 00:30, genesis0523

What line represents the relationship between r and s

Answers: 1

continue

Do you know the correct answer?

The phone lines to an airline reservation system are occupied 40% of the time. Assume that the event...