QuickHelper

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    Phoniex
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Category > Accounting Posted 29 Aug 2017 My Price 11.00

probability distribution, statistics homework help

Question description

 

1. The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean for this probability distribution. Round it to the nearest tenths.

X

4

5

6

8

10

P(X)

0.4

0.3

0.1

0.15

0.05

2. The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the variance for this probability distribution. Round it to the nearest hundredths.

X

4

5

6

8

10

P(X)

0.4

0.3

0.1

0.15

0.05

3. The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the standard deviation for this probability distribution. Round the answer to the nearest hundredths.

X

4

5

6

8

10

P(X)

0.4

0.3

0.1

0.15

0.05

4. A landscape contractor bids on jobs where he can make $3000 profit. The probability of getting 1, 2, 3, or 4 jobs per month are shown below. Find the contractor's profit per month.

Number of jobs

1

2

3

4

Probability

0.2

0.3

0.4

0.1

5. If the variance of a random variable is 4, what is the standard deviation?

6. For a game at the carnival you get to roll a ten-sided die, numbered from 1 to 10. If you roll at least a 3, you win$10. Unfortunately, if you roll anything else, you lose $15. How much money do you expect to make (or lose) per game?

Answers

QuickHelper
(10)
Status NEW Posted 29 Aug 2017 05:08 PM My Price 11.00

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