What is the probability that all 4 phones are busy

Assignment Help Mathematics
Reference no: EM131826982

An office has 4 phone lines. Each is busy about 10% of the time. Assume that the phone lines act independently.

a. What is the probability that all 4 phones are busy?

b. What is the probability that 3 of the phones are busy?

Reference no: EM131826982

Questions Cloud

Probability that it is functioning properly : If the equipment is able to function properly when at least 6 of the components are operational, what is the probability that it is functioning properly?
What is the probability that john will get : A multiple-choice exam has 6 problems, each of which has 3 possible answers. What is the probability that John will get 4 or more correct answers by just guessi
What is the probability that 3 or more bits are received : A block of 100 bits is to be transmitted over a binary channel with a probability of bit error of p¼0.001. What is the probability that 3 or more bits.
Calculate the total service department cost : Service department costs are allocated by the direct method. Calculate the total service department cost allocated to each production department
What is the probability that all 4 phones are busy : An office has 4 phone lines. Each is busy about 10% of the time. Assume that the phone lines act independently.
Write program to input two colors and output resulting color : Write a program to input two colors, and output the resulting color. Be sure to give the user instructions for inputting the names of the colors.
What is the probability that at most one laptop is defective : a. What is the PMF of K, the number of defective laptops out of the 8 that the ABC company purchased?
Determine the mean and variance of x : If we select four of these products at random and denote the number of the four products that are defective by the random variable X.
Find the pmf of the number of heads : Five fair coins are tossed. Assuming that the outcomes are independent, find the PMF of the number of heads obtained in the experiment.

Reviews

Write a Review

Mathematics Questions & Answers

  Discuss about the logistic curve with carrying capacity

A function of the form y = be-(x-a)2/2 with its maximum at the point (0, 3).

  What percentage of families in us were married households

The percentage of families that were married households in the United States between 1970 and 2000 is approximatelyP(t) = 86.9e-0.05t (0 = t = 3).

  What is the lowest salary

I want to be earning an annual salary of $100,000 when I retire in 21 years. I have been offered a job that guarantees an annual salary increase of 4% per year, and the starting salary is negotiable. What is the lowest salary that I should request..

  Points m-1 8 and n3 -4 lie on the graph of y -3x 5 which

question points m-1 8 and n3 -4 lie on the graph of y -3x 5. which of the following points is collinear with m and

  Using expeccted value to find a fair bet in five card stud

Using expeccted value to find a fair bet in five card stud. If casino five card stud were fair, how much should it pay to a player who bets $10 and gets a full house versus a dealer who gets two pair?

  A flying wedge spaceship is a right triangle in side view

question a flying wedge spaceship is a right triangle in side view. at rest the base and height which form the 90deg

  If 6-person volleyball team is selected at random from 12

a recreational club has 12 members.a. in how many ways can the club choose 6 members to form a volleyball team? show

  How far from the firing point will the projectile

How far from the firing point will the projectile be when it is 70 feet high? What is x? What is h(x)? Which are you being given and which do you need to find?

  Kool-aid mix with a kool-aid concentration

Suppose that a 16L container has 8L of water and kool-aid mix with a kool-aid concentration of 0.25kg/L. Further suppose that a sweeter kool-aid mixture with a concentration of 0.5kg/L is pumped into the container at a rate of 4L/min.

  Find the areas of the three rectangles

A farmer has 1000 metres of fence wire with which to make a rectangular enclosure, as illustrated in the figure below.

  A can juice is 16 cm tall and has a diameter of 9 cm the

a can juice is 16 cm tall and has a diameter of 9 cm. the ends of the can are tin and the body is cardboard.what is the

  A sector of a circle has a perimeter of 7 centimeters

Having trouble with this precalculus question for my exam:A sector of a circle has a perimeter of 7 centimeters and area 3cm^2. Find all possible radii.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd