Posted by HM on Wednesday, November 9, 2011 at 3:39am.
No. (76/88)^2 = 0.7459
how is it going to be 76/88 ?
It isn't. For two draws, it is the square of that.
There are 76 good coils out of 88. What does that tell you about the probabiloity of selecting a good one at random each time?
My answer was correct.. Your answer is not in the choices :S
There are a total of 100 coils, of which 88 are good
prob of getting 2 good ones in a row, after replacing the first
= (88/100)(88/100)
= (88/100)^2
= .7744
Thank you Reiny, that is what I thought.
Drwls I appreciate your effort anyway :)
a batch consists of 12 defective clocks and 88 good ones find the probability of getting two good clocks when the two are randomly selected if the first selection is replaced before the second selection is made.
B- the first selection is not replaced.
Related Questions
PROBABILITY MATH - A batch consists of 12 defective coils and 88 good ones. find...
statistics - Suppose that 8% of a certain batch of calculators have a defective ...
Stats - Suppose that 8% of a certain batch of calculators have a defective case...
Stats - Suppose that 8% of a certain batch of calculators have a defective case...
Probability Math - Through a mix up on the production line, 5 defective light ...
statistics - A cellular phone manufacturer randomly selects 5 phones from every ...
statistics - A cellular phone manufacturer randomly selects 5 phones from every ...
statistics - the quality control inspector of a production plant will reject a ...
Probability and Statistics - A package contains 12 resistors, 3 of which are ...
Probability and Statistics - A package contains 12 resistors, 3 of which are ...
For Further Reading
