Purchase Solution

Vehicle Mileage Statistical Analysis

Not what you're looking for?

Ask Custom Question

The Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean = 24.8 miles per gallon and a standard deviation a = 6.2 miles per gallon for highway driving. Assume a normal distribution.

Use this information to answer questions #13 - #14.

(13) Use Table 4 (Standard Normal probability table), software, or the TI-83 to find the probability that a randomly selected automobile gets between 31 mpg and 37 mpg.

14) Find the gas mileage of the worst 2.5% of all cars. Transform a z-score into an x-value.

Purchase this Solution

Solution Summary

The solution to questions proposed, complete with calculations/formula. Standard normal probability tables are provided.

Solution Preview

Please see the attachments.
Calculations are in excel.

The Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean = 24.8 miles per gallon and a standard deviation a = 6.2 miles per gallon for highway driving. Assume a normal distribution.
Use this information to answer questions #13 - #14.
(13) Use Table 4 ...

Purchase this Solution


Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.