BOOMER4399 BOOMER4399

Today at 4:49 AM
Mathematics

Answered

It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 100 cars is 27.2 miles and assume the standard deviation is 2.4 miles. Now suppose the car producer wants to test the hypothesis that μ, the mean number of miles per gallon, is 25.9 against the alternative hypothesis that it is not 25.9. Conduct a test using α=.05 by giving the following:

Answer :

AlonsoDehner AlonsoDehner

Today at 4:54 AM

Answer:

Step-by-step explanation:

Given that the sample mean for a random sample of 100 cars is 27.2 miles and assume the standard deviation is 2.4 miles.

H0: x bar = 25.9

Ha: x bar ≠ 25.9

(Two tailed test at 95% confidence)

Alpha =0.05

The hypothetical mean is 25.900

The actual mean is 27.200

The difference between these two values is 1.300

The 95% confidence interval of this difference:

From -3.462 to 6.062

t = 0.5417

df = 99

standard error of difference = 2.400

The two-tailed P value equals 0.5893

Since p >0.05 this difference is considered to be not statistically significant.

Answer Link

Other Questions

10.0 mL of a 0.770 M sodium hydroxide solution is transferred to a 50.0 mL volumetric flask followed by the addition of water to the calibration mark. What is t

A high school football player fell yesterday on his wrist while at practice. He is now tender between the two tendons at the base of the thumb. Which of the fol

Mr. Ishimoto ordered x new math books and y new workbooks for his class. The total weight of the box of books cannot be more than 50 pounds. If each math book w

Aging that involves universal and irreversible changes that, due to genetic programming, occur as people get older is called .

10.0 mL of a 0.770 M sodium hydroxide solution is transferred to a 50.0 mL volumetric flask followed by the addition of water to the calibration mark. What is t

Defferance between Rabi, kharif and zaid crop

mention any three ways of preventing diseases spread by mosquito

In the parking area of a mall,Manoj counted that there are 45 scooters, 75 bikes and 115 cars.Find the ratio of the number of cars to the total number of vehicl

Solve the following word problem about two-step equations:Ta

Please tell fast ok please tell

Measuring the centripetal acceleration of an orbiting object is rather difficult, so an alternative approach is to use the period of the orbiting object. Find a

Shoe-leather costs arise when higher inflation rates induce people to . a. spend more time b. looking for bargains c. spend less time d. looking for bargains

Sarah is starting a new job as a medical assistant at a local clinic. Under OSHA regulations, what must her employer offer her as part of her employment?

A mass M is hanging from a rope of length L and mass m. A student gives the mass a quick horizontal shake to set up a wave which travels along the rope.Give an

Sell or Process Further Great Lakes Boat Company manufactures sailboat hulls at a cost of $4,200 per unit. The hulls are sold to boat yards for $5,200. The comp

Select the best description for the following: The school field trip is next week the kids are all excited. A. comma splice B. fused sentence C. complete sente

Rogue waves are created along the "Wild Coast" off the southeast coast of , where the Agulhas Current flows directly against large Antarctic storm waves.

Why did many Africans living in Africa convert to Islam? Select one: a. They were physically forced to convert. b. They liked Islamic ideas. c. They were paid t

Macrocconomics simply focuses on the annual performance of a particular national economy and ignores it interactions with other national economies around the wo

Which of the following metabolic processes releases hydrogen ions into body fluids? a. Anaerobic respiration of glucose b. Incomplete oxidation of fatty acids c