# statistics

posted by .

An oil change shop advertised to change oil within 15 minutes. Based on the data collected on a typical day, what is the probability that oil change will take 15 minutes or less time? Based on the data, do you think the business claim is valid? Explain why or why not.

• statistics (incomplete) -

What data?

## Similar Questions

1. ### Statistics

It is known that the amount of time needed to change the oil in a car is normally distributed. A random sample of 100 oil changes yielded a sample mean of 22 minutes and a standard deviation of 5 minutes. Then compared to the interval …
2. ### Stitistics

An oil change company advertises that they can change the oil in your car in 15 minutes. Based on the data collected below, what is the probability that oil change will take more than 15 minutes?
3. ### stat

An oil change company advertises that they can change the oil in your car in 15 minutes. Based on the data collected below, what is the probability that oil change will take more than 15 minutes?
4. ### Statistics

12) Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at the Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of …
5. ### Statistics

12) Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at the Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of …
6. ### Calculus

I am re-posting this question because i wrote the incorrect function last time. An oil tank is being drained for cleaning. After t minutes there are v litres of oil left in the tank, where v(t)=35(25-t)^2, 0<=t<=25 a) determine …
7. ### Stats

the typical saturday the oil change facility will perform 40 oil changes between 10 am and 12pm. treating this as a random sample, what mean oil change time would there be a 10% chance of being at or below?
8. ### statistics

a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is uniformly distributed within a range of 35 minutes to 55 minutes. determine the standard deviation, what is the probability …
9. ### math help

Mr. Richards has two cars that he changes the oil in every four months. During an oil change, each car needs 4 1/2 quarts of oil. Each 5-quart container of oil costs \$14.99. Before tax, how much will the oil cost Mr. Richards for both …
10. ### math help fast

During an oil change, each car needs 4 1/2 quarts of oil. Each 5-quart container of oil costs \$14.99. Before tax, how much will the oil cost Mr. Richards for both cars in a year?

More Similar Questions