Statistics

posted by Tykrane

A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers' prices are the same. However, Supplier A's tires have an average life of 60,000 miles with a standard deviation of 10,000 miles. Supplier B's tires have an average life of 60,000 miles with a deviation of 2,000 miles. Which of the following statements is true?

A. the two distributions of tire life are the same.

B. on average, Supplier A's tires have a longer life than Supplier B's tires.

C. the life of Supplier B's tires is more predictable than the life of Supplier A's tires.

D. the dispersion of Supplier A's tire life is less than the dispersion of Supplier B's tire life.

1. Ms. Sue

2. PsyDAG

What does the difference in standard deviations tell you?

I hope this helps.

Similar Questions

1. Statistics

A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers' prices are the same. However, Supplier A's tires have an average life of 60,000 miles with a standard deviation …
2. statistics

Please help asap! A tire company is considering a tire replacement company. They have agreed to replace any tire that fails with a life in the bottom 10% of the population. For a given population of tires, the life is a normal distribution …
3. math

a tire manufacturer believes that the tread life of its tires are normally distributed and will lst an average of 60,000 miles with a standard deviation of 3,000 miles. sixty-four randomly selected tires were tested and the average …
4. Math

You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at …
5. stats

The life of tires manufactured by Omega Tires Inc is believed to be normally distributed with a mean of 110,000 km and a standard deviation of 5,000 km. A random sample of 200 tires is tested . What is the problability of the mean …
6. Statistics

Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The results showed that the average tread life was 52,515 miles with a standard deviation of 3,550 miles. What is the best estimate …
7. Statistics

Problem: you work for a manufacturer of tires (average life of your tires is 60.000 km with a standard deviation of 8.000 km). A supplier offers you new material that he says will increase by 10% the mileage of the tires you produce. …
8. statistics

The tread life a certain brand of tires is known to be normally distributed with a mean of 60,000 miles and a standard deviation of 5,000 miles. The company wishes to set the warranty so that only 4% of the tires will need to be replaced. …
9. statistics

The tread life a certain brand of tires is known to be normally distributed with a mean of 60,000 miles and a standard deviation of 5,000 miles. The company wishes to set the warranty so that only 4% of the tires will need to be replaced. …
10. mekele university

the lytton rubber company wishes set a minimum mileage guarantee on its new Mx 100 tire. Tests reveal the mean mileage is 67,900 with the standard deviation of 2,050 miles and that the deviation follows normal distribution. They want …

More Similar Questions