Cellular Phone Sales The probability that a cellular phone

Chapter 5, Problem 5E

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 5E

Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean, variance, and standard deviation for this probability distribution.

X

4

5

6

8

10

P(X)

0.4

0.3

0.1

0.15

0.05

What is the probability that they will sell 6 or more contracts three days in a row?

Questions & Answers

QUESTION:

Problem 5E

Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean, variance, and standard deviation for this probability distribution.

X

4

5

6

8

10

P(X)

0.4

0.3

0.1

0.15

0.05

What is the probability that they will sell 6 or more contracts three days in a row?

ANSWER:

Solution

Step 1 of 3

We have to find the Mean, Variance and Standard deviation of the given distribution

The given distribution is

(X)

4

5

6

8

10

 P(X)

0.4

0.3

0.1

0.15

0.05

Mean=

         =

         =4(0.4)+5(0.3)+6(0.1)+8(0.15)+10(0.05)

         =5.4


Add to cart


Study Tools You Might Need

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back