You already have the answer in the question
It's just ratio ,
so 3x+7x+11x=189
so, 21x=189
x=9
therefore green pepper= 3x=3×9=27
so the answer is B and you can go for that !
Answer:
a)
b)
Step-by-step explanation:
Given:
The lifetimes of the individual items are independent exponential random variables.
Mean = 200 hours.
Assume, Ti be the time between ( )st and the failures. Then, the are independent with being exponential with rate
Therefore,
a)
The variance is given by,