Event Probability

Too much enamel 0.25
Too little enamel 0.2
Uneven application 0.35
No defects noted 0.42

(1) What is the probability of a paint defect?

What is the probability of a paint defect which includes an improper amount of paint?

And what grade are you in me:7 but this is WAY to hard for i am the #1 math student in middle school at my school

To calculate the probability of a paint defect, you need to sum up the probabilities of all the events that represent a paint defect.

Given the following probabilities:
Too much enamel = 0.25
Too little enamel = 0.2
Uneven application = 0.35
No defects noted = 0.42

The probability of a paint defect is the sum of the probabilities of too much enamel, too little enamel, and uneven application. We can calculate it as follows:

Probability of a paint defect = Probability of too much enamel + Probability of too little enamel + Probability of uneven application
= 0.25 + 0.2 + 0.35
= 0.8

Therefore, the probability of a paint defect is 0.8 or 80%.

To calculate the probability of a paint defect that includes an improper amount of paint, you need to sum up the probabilities of too much enamel and too little enamel. We can calculate it as follows:

Probability of a paint defect with improper amount of paint = Probability of too much enamel + Probability of too little enamel
= 0.25 + 0.2
= 0.45

Therefore, the probability of a paint defect with an improper amount of paint is 0.45 or 45%.