The Vardon Exploration Company is getting ready to leave for South America to explore for oil. One piece of equipment requires 10 batteries that must operate for more than 2 hours. The batteries being used have a 15 percent chance of failing within 2 hours. The exploration leader plans to take 15 batteries. Assuming that the conditions of the binomial apply, the probability that the supply of batteries will contain enough good ones to operate the equipment is:
A) 0.0449
B) 0.9832
C) 0.0132
D) 0.9964

Question

Quizplus · Accepted Answer

The probability of a single battery not failing is 0.85. Using the binomial distribution, the probability of having at least 10 working batteries out of 15 is calculated, which results in approximately 0.9832.

The Vardon Exploration Company Is Getting Ready to Leave for South