2. A facory has two machines A and B. past records shows that machine A produces 30% of the total output and Machine B the remaining 70%. machine
A produces 5% defective articles and machine B produces 1 % defective
items. An item is drawn at random and found to be defective. What is the
probability that it was produces a) by machine A b) by machine B?

a negative exponent is translated as follows:

so, we have

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

139 divided by a number

step-by-step explanation:

the rate of change is 25