SOLUTION: A bag contains 200items of which 20items are defectives.seven items are selected at random 1 aftert another with replacement.what is the probability of obtaning ...questions number
Algebra.Com
Question 496758: A bag contains 200items of which 20items are defectives.seven items are selected at random 1 aftert another with replacement.what is the probability of obtaning ...questions number 1)no defective 2)5non defective
from: Probability distribution of binomial problem.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A bag contains 200 items of which 20 items are defectives. seven items are selected at random 1 after another with replacement. what is the probability of obtaning ...questions number
1)no defective
Binomial Problem with n = 7 and p(defect) = 20/200 = 1/10
---
P(x = 0) = 7C0(0.1)^0*(0.9)^7 = 0.9^7 = 0.4783
-----------------------------------------------------
2)5 non defective
that is the same as 2 defective out of 7
P(x = 2) = 7C2(0.1)^2*(0.9)^5 = 0.1240
=================
Cheers,
Stan H.
=================
--------------------
RELATED QUESTIONS
A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are... (answered by Fombitz)
I need help with part 2 of this question:
A box contains 10 items, of which 3 are... (answered by stanbon)
a box of parts contains 8 good items and 4 defective items. if 2 are selected at random... (answered by ewatrrr)
A bag contains seven batteries, all of which are the same size and are equally likely to... (answered by stanbon)
a box contains 10 items,3 of which are defective.If 4 are selected at random,without... (answered by reviewermath)
a box contains 24 items four of which are defective if five are selected at random what... (answered by ewatrrr)
A bag contains 20 tennis balls which 4 are defective. If two balls are selected at... (answered by stanbon)
Five items are selected at random from a production line. What is the probability of... (answered by reviewermath)
A bag contains 13 marbles of which 10 are red. A marble is selected at random and... (answered by ewatrrr)