Question
There are 40 units of which 15% are defective and a sample of 8 units is...
There are 40 units of which 15% are defective and a sample of 8 units is taken.
a) cases can presnetarse? which would be the expression statistics for them?
B) few samples would have to each case?
C.) which would be the probability of each case?
D) which would be the case of less probability of occurrence
| GOOD | DETECTIVE | CASES(expression) | #CASES(samples) | PROBABILITY |
| 18.156.204 | ||||
| 5 | 0.0724 | |||
| 6 |
Homework Answers
Answer #1
the probability that the unit is defective: p=0.15
total units in the sample: n=8
Total number of samples of 8 taken from 40 units is 
The number for a sample of 8 number of defective samples can be from (0,1,2,.........,8)
Let X be the number of defective units
The case with less probability of occurrence is P(X=8)
| GooD | Defective | Probability | #Cases |
| 0 | 8 |  |
0 |
| 1 | 7 |  |
76904685*P(X=0) =769 |
| 2 | 6 |  |
15381 |
| 3 | 5 |  |
199952 |
| 4 | 4 |  |
1422737 |
| 5 | 3 |  |
6452303 |
| 6 | 2 |  |
18272553 |
| 7 | 1 |  |
29585232 |
| 8 | 0 |  |
20956527 |
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