Binomial Distribution
A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?
Binomial Probability
|
Num Trials, n; |
10 |
Evaluate | |
|
Success Prob, p |
0.5 |
||
|
Mean: |
2.2000 |
||
|
St Dev: |
1.3266 |
||
|
Variance: |
1.7600 |
||
|
x |
P(x) |
P(x or fewer) |
P(x or greater) |
|
0 |
0.0009766 |
0.0009766 |
1.0000000 |
|
1 |
0.0097656 |
0.0107422 |
0.9990234 |
|
2 |
0.0439453 |
0.0546875 |
0.9892578 |
|
3 |
0.1171875 |
0.1718750 |
0.9453125 |
|
4 |
0.2050781 |
0.3769531 |
0.8281250 |
|
5 |
0.2460938 |
0.6230469 |
0.6230469 |
|
6 |
0.2050781 |
0.8281250 |
0.3769531 |
|
7 |
0.1171875 |
0.9453125 |
0.1718750 |
|
8 |
0.0439453 |
0.9892578 |
0.0546875 |
|
9 |
0.0097656 |
0.9990234 |
0.0107422 |
|
10 |
0.0009766 |
1.0000000 |
0.0009766 |
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