Estimate for the mean highway mileage for suvs

Assignment Help Mathematics

Reference no: EM131169085

Even before the record gas prices during the summer of 2008, an article written by Will Lester of the Associated Press reported on a poll in which 80% of those surveyed say that Americans who currently own a SUV (sport utility vehicle) should switch to a more fuel-efficient vehicle to ease America's dependency on foreign oil. This study was conducted by the Pew Research Center for the People & the Press. 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 was selected, and the owners were asked to report their highway mileage. The following results were summarized from the sample data:

x =18.2 mpg
s = 6.3 mpg

Based on these sample data, compute and interpret a 90% confidence interval estimate for the mean highway mileage for SUVs.

Reference no: EM131169085

Questions Cloud

Describe the parameter admissions office wishes to estimate : The plan is to randomly identify 100 students and obtain their total textbook costs. The average cost for the 100 students will be used to estimate the average cost for all students.

Analyze role of collaboration in crisis intervention : Analyze and apply the role of collaboration in crisis intervention, Apply ethical codes to crisis intervention and Understand and apply concepts and techniques related to collaborative crisis intervention

Design a continuous reinforced concrete beam : Using the ACI coefficients, design a continuous reinforced concrete beam that will span four supports. The end spans are 24-ft long; the center span is 28-ft long (spans are measured center to center of supports).

Discuss whether direct democracy is possible in the u.s. : Equality in the processes and procedures of government does not always equate to "equality" of outcomes or conditions for citizens. Discuss several examples of this in the U. S. today and recommend a solution to one of your examples.

Estimate for the mean highway mileage for suvs : Based on these sample data, compute and interpret a 90% confidence interval estimate for the mean highway mileage for SUVs.

What is the proper cash flow amount to use : What is the proper cash flow amount to use as the initial investment in fi xed assets when evaluating this project? Why?

What is the connection between failed states and terrorism : Review the article,Failed States and the Spread of Terrorism in Sub-Saharan Africa, by Howard (2010), which is required reading for this week. What is the connection between failed (now referred to as fragile) states and terrorism and other forms ..

Design the continuous beam along column line two : A floor system is to consist of beams, girders, and a slab; a partial floor plan is shown. Design the continuous one-way slab. Design the continuous beam along column line 2.

How earnings growth explains growth in stock price : Make a graph showing how earnings growth explains growth in stock price. Does it appear to be true that (on the average in the long run) stock price growth parallels earnings growth?

User Account

All Pages