# probability of defective versus non defective balls

A batch of 100 Barbie dolls contains four (4) defective dolls. What is the probability that a sample of three (3) dolls from this batch will contain:

a) No defective dolls.

b) All defective dolls.

c) At least one defective dolls.

d) At least one non-defective doll.

https://brainmass.com/statistics/probability/probability-defective-non-defective-balls-464988

#### Solution Preview

Hi there,

Solution:

According to the statement, the probability of a doll being defective is 0.04.

Then the probability of a doll being non-defective is ...

#### Solution Summary

The solution provides examples how to calculate the probability of defective versus non defective balls among the choices.

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