Draw the normal curve model for auto fuel economy

Reference no: EM13136447

The EPA has done a survey of recent car models and estimates that fuel efficiency can be modeled as a normal distribution with a mean of 23 mpg and a standard deviation of 5 mpg.

Draw the normal curve model for auto fuel economy, following the 68-95-99.7 rule. Clearly label the X-axis with the mpg for the appropriate points.

The middle 68% of cars should get between _________mpg and _________mpg

What percent of cars should get more than 25 mpg? ________%

Calculate and then describe the gas mileage of the worst 10% of cars

What is the IQR for cars? (Remember that this is the range for the middle 50%) _________ mpg.

Reference no: EM13136447

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