Question 1
Use rules for Discrete Probability Distribution
to find missing value in this table:
| x | 0 | 1 | 2 | 3 | 4 |
| P(x) | 0.15 | 0.25 | … | 0.20 | 0.10 |
|
0.30 |
||
|
0.25 |
||
|
0.20 |
||
|
0.15 |
1 points
Question 2
Find Expected Value for the random variable
with the following probability distribution:
| x | 0 | 1 | 2 | 3 | 4 |
| P(x) | 0.1 | 0.2 | 0.3 | 0.3 | 0.1 |
|
0.8 |
||
|
1.6 |
||
|
2.1 |
||
|
3.0 |
1 points
Question 3
Use Binomial Distribution (formula or Appendix Table)
to find probability that you flip the coin 6 times
and will obtain Head exactly 4 times.
Appendix Table for Binomial Distribution
|
0.500 |
||
|
0.234 |
||
|
0.356 |
||
|
0.412 |
1 points
Question 4
Use Appendix Tables for Binomial Distribution
to find probability that with n = 10 and p = 0.2
x will be less than 3: P(x < 3) (x = 0,1,2)
Appendix Table for Binomial Distribution
|
0.245 |
||
|
0.348 |
||
|
0.677 |
||
|
0.724 |
1 points
Question 5
Use Appendix Tables for Binomial Distribution
to find probability that with n = 6 and p = 0.2
x will be at least 3: P(x ? 3) (x = 3,4,5,6).
Appendix Table for Binomial Distribution
|
0.464 |
||
|
0.351 |
||
|
0.284 |
||
|
0.099 |
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