Question

I really need a and e but if you could check and make sure my answers are right for the other ones that would be great thanks!

1 of 110 complete) ▼ This Test: 100 pts p his Question: 5 pts Fuel economy estimates for automobiles built one year predicted a mean of 25.2 mpg and a standarc deviation of 6.8 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. О в. c. 618 425 238 18.421 825 2286 32 35.4 b) In what interval would you expect the central 99.7% of autos to be found? Using the 68-95-99.7 rule, the central 99.7% of autos can be expected to be found in the interval from 11.6 to 40.8mpg Do not round. Type integers or decimals.) c) About what percent of autos should get more than 32 mpg? More Click to select your answerls). esc

Answer 1

a)

Option A) is correct

e)

z value at 2.5% = -1.96

z = (x -mean)/s

-1.96 - ( x -26.2)/6.8

x = 11.6

They get less than 11.6 mpg