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a) Draw the model for auto fuel economy. Clearly label it, showing what the 68-95-99.7 Rule predicts. b) In what interval would you expect the central 68% of to be found? c) About what percent of autos should get more than 31 mpg? autos

a) Draw the model for auto fuel economy. Clearly label it, showing what the 68-95-99.7 Rule predicts. b) In what interval would you expect the central 68% of to be found? c) About what percent of autos should get more than 31 mpg? autos

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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of 84 pounds. ns from the mean would a steer al, a steer weighing 1000 pounds ford, CA, recorded the speeds where the speed limit was 20 was 23.84 mph, with a standard mally recorded every car for a 00 representative readings.) ons from the mean would a car car traveling 34 mph or described in Exercise 17 ith a standard deviation of ling Angus steers will weigh at ow much over (or under) that subtract 1000 24. Rock concerts certs in large venues. They always drew a large crowd, avelaging 21,359 fans. While the band did not announce (and probably never calculated) the standard deviation, which of these values do you think is most likely to be correct: 20, 200, 2000, or 20,000 fans? Explain your choice. 25. Guzzlers? Environmental Protection Agency (EPA) fuel econ- omy estimates for automobile models tested recently predicted a mean of 24.8 mpg and a standard deviation of 6.2 mpg for highway driving. Assume that a Normal model can be applied. a) Draw the model for auto fuel economy. Clearly label it, showing what the 68-95-99.7 Rule predicts. b) In what interval would you expect the central 68% of autos to be found? c) About what percent of autos should get more than 31 mpg? d) About what percent of cars should get between 31 and 37.2 mpg? e) Describe the gas mileage of the worst 2.5% of all cars. 26. IQ Some IQ tests are standardized to a Normal model, with a steng this company 31. Trees revisite diameters of about the displays Explai 2 . Car speeds here are the
Transcribed Image Text:of 84 pounds. ns from the mean would a steer al, a steer weighing 1000 pounds ford, CA, recorded the speeds where the speed limit was 20 was 23.84 mph, with a standard mally recorded every car for a 00 representative readings.) ons from the mean would a car car traveling 34 mph or described in Exercise 17 ith a standard deviation of ling Angus steers will weigh at ow much over (or under) that subtract 1000 24. Rock concerts certs in large venues. They always drew a large crowd, avelaging 21,359 fans. While the band did not announce (and probably never calculated) the standard deviation, which of these values do you think is most likely to be correct: 20, 200, 2000, or 20,000 fans? Explain your choice. 25. Guzzlers? Environmental Protection Agency (EPA) fuel econ- omy estimates for automobile models tested recently predicted a mean of 24.8 mpg and a standard deviation of 6.2 mpg for highway driving. Assume that a Normal model can be applied. a) Draw the model for auto fuel economy. Clearly label it, showing what the 68-95-99.7 Rule predicts. b) In what interval would you expect the central 68% of autos to be found? c) About what percent of autos should get more than 31 mpg? d) About what percent of cars should get between 31 and 37.2 mpg? e) Describe the gas mileage of the worst 2.5% of all cars. 26. IQ Some IQ tests are standardized to a Normal model, with a steng this company 31. Trees revisite diameters of about the displays Explai 2 . Car speeds here are the
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