Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal model can be applied. Use the 68 - 95 -99.7 Rule to complete parts a) through e). a) Draw the model for auto fuel economy. Oc. b) In what interval would you expect the central 68% of autos to be found? Using the 68-95-99.7 rule, the central 68% of autos can be expected to be found in the interval from to (Do not round. Type integers or decimals.) mpg c) About what percent of autos should get more than 31 mpg? Using the 68-95-99.7 rule, about % of autos should get more than 31 mpg. (Do not round. Type an integer or a decimal.) Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal model can be applied. Use the 68 -95 -99.7 Rule to complete parts a) through e). Using the 68-95-99.7 rule, the central 68% of autos can be expected to be found in the interval from O toO mpg. (Do not round. Type integers or decimals.) c) About what percent of autos should get more than 31 mpg? Using the 68-95-99.7 rule, about% of autos should get more than 31 mpg. (Do not round. Type an integer or a decimal.) d) About what percent of autos should get between 31 and 35.8 mpg? Using the 68-95-99.7 rule, about % of autos should get between 31 and 35.8 mpg. (Do not round. Type an integer or a decimal.) e) Describe the gas mileage of the best 2.5% of cars. Choose the correct answer below. OA. They get more than 31 mpg. B. They get less than 21.4 mpg. OC. They get more than 40.6 mpg. O D. They get more than 35.8 mpg.
Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal model can be applied. Use the 68 - 95 -99.7 Rule to complete parts a) through e). a) Draw the model for auto fuel economy. Oc. b) In what interval would you expect the central 68% of autos to be found? Using the 68-95-99.7 rule, the central 68% of autos can be expected to be found in the interval from to (Do not round. Type integers or decimals.) mpg c) About what percent of autos should get more than 31 mpg? Using the 68-95-99.7 rule, about % of autos should get more than 31 mpg. (Do not round. Type an integer or a decimal.) Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal model can be applied. Use the 68 -95 -99.7 Rule to complete parts a) through e). Using the 68-95-99.7 rule, the central 68% of autos can be expected to be found in the interval from O toO mpg. (Do not round. Type integers or decimals.) c) About what percent of autos should get more than 31 mpg? Using the 68-95-99.7 rule, about% of autos should get more than 31 mpg. (Do not round. Type an integer or a decimal.) d) About what percent of autos should get between 31 and 35.8 mpg? Using the 68-95-99.7 rule, about % of autos should get between 31 and 35.8 mpg. (Do not round. Type an integer or a decimal.) e) Describe the gas mileage of the best 2.5% of cars. Choose the correct answer below. OA. They get more than 31 mpg. B. They get less than 21.4 mpg. OC. They get more than 40.6 mpg. O D. They get more than 35.8 mpg.
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Transcribed Image Text:Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal
model can be applied. Use the 68 - 95 - 99.7 Rule to complete parts a) through e).
a) Draw the model for auto fuel economy.
OA
OC.
E ER Vt sa
1A 2 28 31
b) In what interval would you expect the central 68% of autos to be found?
Using the 68-95-99.7 rule, the central 68% of autos can be expectled to be found in the interval fromto
(Do not round. Type integers or decimals.)
mpg
c) About what percent of autos should get more than 31 mpg?
Using the 68-95-99.7 rule, about % of autos should get more than 31 mpg.
(Do not round. Type an integer or a decimal.)
Fuel economy estimates for automobiles built one year predicted a mean of 26.2 mpg and a standard deviation of 4.8 mpg for highway driving. Assume that a Normal
model can be applied. Use the 68 - 95 - 99.7 Rule to complete parts a) through e).
Using the 68-95-99.7 rule, the central 68% of autos can be expected to be found in the interval from O toO mpg.
(Do not round. Type integers or decimals.)
c) About what peroent of autos should get more than 31 mpg?
Using the 68-95-99.7 rule, about% of autos should get more than 31 mpg.
(Do not round. Type an integer or a decimal.)
d) About what percent of autos should get between 31 and 35.8 mpg?
Using the 68-95-99.7 rule, about% of autos should get between 31 and 35.8 mpg.
(Do not round. Type an integer or a decimal.)
e) Describe the gas mileage of the best 2.5% of cars.
Choose the correct answer below.
OA. They get more than 31 mpg.
B. They get less than 21.4 mpg.
C. They get more than 40.6 mpg.
OD. They get more than 35.8 mpg.
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