Is dispersion of supplier a-s tire life is less than b

Assignment Help Basic Statistics

Reference no: EM13119566

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 standard 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 then Supplier B's tires
C. The life of Supplier B's tire 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

Reference no: EM13119566

Questions Cloud

Generate an aggregate cell mass equal to the mass of earth : How long would it take one starting Ecoli cell growing at a constant generation time (g) =20 mins (With a growth rate, k, of 3 hours) to generate an aggregate cell mass equal to the mass of the earth? Assume no nutrient limitation or growth inhibi..

Find out the velocity with which the camera hits the ground : A robot probe drops a camera off the rim of a 239m high cliff on Mars, where the free fall acceleration is -3.7m/s^2. Find out the velocity with which the camera hits the ground.

Assuming that all marbles are equally likely to be picked : A bag contains 10 red, 12 green, and 8 yellow marbles. Assuming that all marbles are equally likely to be picked from the bag

Describe the pathway the restores the supply of nad+ : Describe the pathway the restores the supply of NAD+ in muscle tissue when the oxygen supply isn't adequate to meet demands. Write an equation for the process.

Is dispersion of supplier a-s tire life is less than b : Supplier B's tires have an average life of 60,000 miles with a standard deviation of 2,000 miles. Which of the following statements is true?

Elucidate will he be able to stop in time : If it takes him 0.250 s to get the brakes on and he is 30.0 m from the intersection when he sees the light, elucidate will he be able to stop in time?

Systems of equations-word problems : The table below is based on surveys of double-income families and the percent of men and women in these families who said they had the greater responsibility for various areas of the housework.

Calculate the volume of c2h2 that is collected over water : Calculate the volume of C2H2 that is collected over water at 23 Celcius by reaction of 0.751 g of CaC2 if the total pressure of the gas is 740 torr. (The vapor pressure of water is 21.07 torr .)

Mean and variance of a probability distribution : Mean and Variance of a Probability distribution, A bank keeps tracks of customers coming into the bank between 12 Noon and1 PM on Monday.

User Account

All Pages