Before The Distribution Of Certain Statistical Software
Statistical probability issues? 3
Whether the proliferation of some statistical software,
Every fourth compact disc (CD) is rechargeable.
The testing process consists of four performances.
Independent program and results analysis. NS
Four test programs have a failure rate.
0.01, 0.03, 0.02 and 0.01.
(a) What is the probability of CD being colored with ink?
Failed the test?
(B) What is the probability?
Which program failed 2 or 3?
(c) In the 100 sample, we would expect many CDs.
Rejected?
(d) What is the probability of CD being damaged?
what's this?
a) 1P (all pads) = 10.99 * 0.97 * 0.98 * 0.99 = 0.068317
b) 1P (e.g. 2 and 3) = 10.97 * 0.98 = 0.494
What is the reason for rejection? Are the four tests one or more errors?
In this case, you would expect 100 * 0.068317 or ut 7 to be rejected.
d) 4 in 1, when one of the four targets is tested.
