Purchase Solution

Statistics - Estimating Single Population Parameters

Not what you're looking for?

Ask Custom Question

A 2005 article written by Will Lester of the Associated Press reported on a poll in which 80% of those surveyed say that American who currently own a SUV (sport utility vehicle) shoudl switch to a more fuel-efficient vehicle to ease America's dependency on foreign oil. As a follow up to this report a consumer group conducted a study of SUV owners to estimate the mean mileage for their vehicles. A simple random sample of 91 SUV owners were slected and asked to report their highway mileage. The following results were reported:

Sample Mean = 18.2 mpg
Sample Standard Deviation = 6.3 mpg

Based on this sample compute and interpret a 90% confidence inverval estimate for the mean highway mileage for SUVs.

Purchase this Solution
Solution Summary

A Complete, Neat and Step-by-step Solution is provided in the attached file.

Purchase this Solution
Free BrainMass Quizzes
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

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

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

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.

View More Free Quizzes
Related BrainMass Solutions

  • Construction of confidence intervals and proper interpretation

    While point estimate is a single number estimate of the population parameter based on the sample statistics, the confidence interval are more popular, as instead of a single point it provides a finite interval of score values on the dependent variable

  • Biostatistics and Scientific Methods

    A parameter is a measure of the whole population and it does not help the physician to treat a single sicked patient while knowing that the whole population is sick. Reference 1. Altman, Douglas. Statistics Notes variables and parameters.

  • Observed Random Process

    We are interested in estimating the two parameters theta_1, theta_2. (a) Propose a fixed sample size and an adaptive estimator for the parameter vector [theta_1, theta_2] that does not require knowledge of the statistics of {w_n}.

  • Calculations of Populations using Random-number generations

    populations using Random-number generations: Population Size = 1000 - Determine the descriptive statistics of the population - Construct a histogram of the population - Take 20 random samples from the population, each of size 40 - Calculate

  • Statistical Terms and Definitions Matching

    Single-peaked distribution Answers Statistics - Science of collecting, organizing, and interpreting data. Statistics - The data that describe or summarize information Population - The complete set of people or things being studied.

  • Research Applications: Confidence Intervals, & Point Estimates

    A confidence interval is an interval estimate of a population parameter. Instead of estimating the parameter by a single value, an interval which is likely to include the parameter is given.

  • Parameter estimation: bias and variability

    This 175 word solution discusses bias and variability when estimating a population parameter with a sample statistic.

  • Purpose of selecting a sample. Sample vs. population.

    Your response is 118 words plus two diagrams that shown how sample statistics differ from population parameters. Your response is 118 words plus two diagrams that shown how sample statistics differ from population parameters.

  • Statistical estimation and regression analysis

    What statistics do you find most useful in regression analysis? Why? Statistical estimation is a deals with estimating the values of parameters based on measured/empirical data.

View More Related Solutions