Question

Both distributions are approximately Normally distributed. (a) One car that Lamar is interested in is four years old and has been driven 40 thousand miles. Another one is three years old and has 30 thousand miles on it. How does the number of miles on these cars compare, relative to other cars of the same age? Provide appropriate statistical calculations to support your answer. (b) Based on the information above, estimate the number of four year old cars Lamar looked at that had been driven more than 42 thousand miles. (c) Estimate the 60th percentile for mileage on the cars Lamar found that were four years old.

          Both distributions are approximately Normally distributed.
(a) One car that Lamar is interested in is four years old and has been driven 40 thousand
miles. Another one is three years old and has 30 thousand miles on it. How does the
number of miles on these cars compare, relative to other cars of the same age? Provide
appropriate statistical calculations to support your answer.
(b) Based on the information above, estimate the number of four year old cars Lamar looked
at that had been driven more than 42 thousand miles.
(c) Estimate the 60th percentile for mileage on the cars Lamar found that were four years old.

Both distributions are approximately Normally distributed.
(a) One car that Lamar is interested in is four years old and has been driven 40 thousand
miles. Another one is three years old and has 30 thousand miles on it. How does the
number of miles on these cars compare, relative to other cars of the same age? Provide
appropriate statistical calculations to support your answer.
(b) Based on the information above, estimate the number of four year old cars Lamar looked
at that had been driven more than 42 thousand miles.
(c) Estimate the 60th percentile for mileage on the cars Lamar found that were four years old.

Added by Asunci-N M.

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