probability distribution, statistics homework help
probability distribution, statistics homework help
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?
"You need a similar assignment done from scratch? Our qualified writers will help you with a guaranteed AI-free & plagiarism-free A+ quality paper, Confidentiality, Timely delivery & Livechat/phone Support.
Discount Code: CIPD30
Click ORDER NOW..
