# Question: A sign on the gas pumps of a chain of

A sign on the gas pumps of a chain of gasoline stations encourages customers to have their oil checked with the claim that one out of four cars needs to have oil added. If this is true, what is the probability of the following events?

a. One out of the next four cars needs oil

b. Two out of the next eight cars need oil

c. Three out of the next 12 cars need oil

a. One out of the next four cars needs oil

b. Two out of the next eight cars need oil

c. Three out of the next 12 cars need oil

**View Solution:**## Answer to relevant Questions

A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds.a. What is the probability that exactly 20 germinate?b. What is the probability that 20 or more germinate?c. What is the ...According to a Gallup Poll conducted March 5−7, 2001, 52% of American adults think that protecting the environment should be given priority over developing U.S. energy supplies. Thirty-six percent think that developing ...Snowfalls occur randomly and independently over the course of winter in a Minnesota city. The average is one snowfall every 3 days.a. What is the probability of five snowfalls in 2 weeks?b. Find the probability of a ...Cars arriving for gasoline at a particular gas station follow a Poisson distribution with a mean of 5 per hour.a. Determine the probability that over the next hour only one car will arrive.b. Compute the probability that in ...An auditor is preparing for a physical count of inventory as a means of verifying its value. Items counted are reconciled with a list prepared by the storeroom supervisor. In one particular firm, 20% of the items counted ...Post your question