Reference no: EM13110868
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month.
Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 15 recent mileages of Citrus cars was taken. The mean of these 15 mileages was 1517 miles per month, and the standard deviation was 203 miles per month.
Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.05 level of significance, can it be concluded that the mean recent monthly mileage,m , of Citrus cars is less than 1550 miles per month?
Perform a one-tailed test. Then fill in the table below.
Carry your intermediate computations to at least three decimal places and round your answers as specified in the table.
The null hypothesis Ho __
The alternate hypothesis H1 __
They type of statistic (Z, t, chi square, F)__
The value of the test statistic: (Round to at least three deciamal places.)__
The critical value at the 0.05 level of significance: (Round to atleast three decimal places.)___
At the 0.05 level of significance, can it be concluded that the mean recent monthly mileage of Citrus cars is less than 1550 miles per month? (yes or no) __
|
Compute the final temperature of the solution
: Compute the final temperature of the solution assuming no heat lost to the surroundings .the solution has a specific heat capacity =4.18 J/°C·?
|
|
Determine whether each of the following terms applies
: Many animals can be categorized as either protostomes and deuterostomes based on certain features of their embryonic development. Determine whether each of the following terms applies to only protostomes, only deuterostomes, both protostomes and d..
|
|
Determine the values of delta e
: Determine after how many days will one-sixteenth of a given amount of radon-222 remain and Determine the values of Delta E and Delta H for the system?
|
|
Discuss the alignment of costco mission and strategy
: Discuss the alignment of Costco's mission and strategy. Evaluate whether or not the strategy supports the mission. Discuss the industry's business philosophy, values and code of ethics. Evaluate how these might give Costco a competitive advantage.
|
|
Hypotheses testing problems
: Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month.
|
|
Convert four officers scores to standardized z-values
: Convert these four officers' scores to standardized z-values.Do you believe there was adequate reason to question these four exam scores? What suppositions are you making?
|
|
Which type of symmetry does each animals display
: Which type of symmetry does each of the following animals display? Sponge, hydra, bobcat, jelly, snake, turtle, and octopus. Group these animals in either asymmetry, radial symmetry, and bilateral symmetry.
|
|
Determine the new volume of the balloon
: carbon dioxide escapes due to A leak , leaving only 3.5 moles of CO 2 inside the balloon. Determine the new volume of the balloon?
|
|
Information about statistics-level of significance
: CHris Turlock owns and manages a small business in San Francisco, California. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of the city.
|