Question

5. Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company with a large fleet of cars hopes to meet the 2011 goal of 30.2mpg or better for their fleet of cars. To see if the goal is being met, they check the gasoline usage for 50 company trips chosen at random, finding a mean of 32.12mpg and a standard deviation of 4.83mpg. In this strong evidence that they have attained their fuel economy goal?

a) Write the appropriate hypotheses.

b) Find the P-value. (Hint: Use the excel function t.dist(.) )

c) Explain what the P-value means in this context.

Please show all work.

Typed work only, no handwriting.

Answer #1

Congress regulates corporate fuel economy and sets an annual
gas mileage for cars. A company with a large fleet of cars hopes to
meet the 2011 goal of 30.2 mpg or better for their fleet of cars.
To see if the goal is being met, they check the gasoline usage for
50 company trips chosen at random from over 1000 trips, finding a
mean of 32.12 mpg and a standard deviation of 4.83 mpg. Is this
strong evidence that they...

A company with a large fleet of cars hopes to keep gasoline
costs down and sets a goal of attaining a fleet average of at least
27 miles per gallon. To see if the goal is being met, they check
the gasoline usage for 70 company trips chosen at random, finding
a mean of 25.45 mpg and a standard deviation of 5.15 mpg. Is this
strong evidence they have failed to attain their fuel economy
goal?
Find the P-Value ____________...

A company with a large effect of cars hopes to keep
gasoline costs down and sets a goal of attaining a fleet average of
at least 26 miles per gallon. To see if the goal is being met, they
check the gasoline usage for 50 company trips chosen at random,
finding a mean of 25.02 mpg and a standard deviation of 4.83 mpg.
Is this strong evidence that they have failed to attain their fuel
economy goal?Thecorrectnullandalternativehypotheses for testing the...

A company with a large fleet of cars hopes to keep gasoline
costs down and sets a goal of attaining a fleet average of at least
25 miles per gallon. To see if the goal is being met, they check
the gasoline usage for 70 company trips chosen at random, finding
a mean of 24.37 mpg and a standard deviation of
4.38 mpg. Is this strong evidence they have failed to attain
their fuel economy goal?
Find the P-value.
The...

A company with a large fleet of cars hopes to keep gasoline
costs down and sets a goal of attaining an average gas mileage of
at least 29 mpg. To see if the goal is being met, they check the
gasoline usage for 54 company trips chosen at random, finding a
mean of 26.766 mpg and a standard deviation of 8.087 mpg. Does the
sample provide convincing evidence the mean gas mileage is less
than the goal set? Use a...

A company with a large fleet of cars hopes to keep gasoline
costs down and sets a goal of attaining a fleet average of 27 mpg.
To see if the goal is being met, they check the gasoline usage of
50 company cars at random, finding a sample mean of 26.12 mpg and a
sample standard deviation of 4.83 mpg. We wish to determine if
there is strong evidence that they failed to attain their fuel
economy goal.
a) Write...

Delta airlines case study
Global strategy. Describe the current global
strategy and provide evidence about how the firms resources
incompetencies support the given pressures regarding costs and
local responsiveness. Describe entry modes have they usually used,
and whether they are appropriate for the given strategy. Any key
issues in their global strategy?
casestudy:
Atlanta, June 17, 2014. Sea of Delta employees and their
families swarmed between food trucks, amusement park booths, and
entertainment venues that were scattered throughout what would...

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