Answer:
That'll help a lot of people in the future ^.^
Step-by-step explanation:
Answer:
The required probability is 0.94
Step-by-step explanation:
Consider the provided information.
There are 400 refrigerators, of which 40 have defective compressors.
Therefore N = 400 and X = 40
The probability of defective compressors is:

It is given that If X is the number among 15 randomly selected refrigerators that have defective compressors,
That means n=15
Apply the probability density function.

We need to find P(X ≤ 3)


Hence, the required probability is 0.94
By using this coupon he will save $2.50. You have to multiply 25 by 0.10.
Answer:
Variables
Step-by-step explanation: