Answer: Our required probability is 81%.
Step-by-step explanation:
Since we have given that
Probability of defective calculators (C)= 10%
Probability of defective batteries (B) = 14%
Probability of both defective calculators and defective batteries = 5%
So, it becomes.

So, probability that the calculator has a good case and good batteries is given by

Hence, our required probability is 81%.
Answer:
= 27.2727% decrease
Step-by-step explanation:
hope this helps
Answer:
Step-by-step explanation:
If she sells 8 dozen, she will get exactly 120 dollars. But that is not what the question says.
Sales = 8 * 15 = 120
The question says that she wants to make more than 120 dollars. Therefore the circle must be an open one. B is the proper answer. A is close but A means that she is willing to stop her sales when they reach 120 dollars. Not so.
A is not the answer.
Answer:
6
Step-by-step explanation: