Question: A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were Notice that

A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were

Notice that one joker said that he sleeps 24 hours a day.

a. The data contain an outlier that is clearly a mistake.
Eliminate the outlier, then construct a 95% confidence interval for the mean amount of sleep from the remaining values.

b. Leave the outlier in and construct the 95%
confidence interval. Are the results noticeably different? Explain why it is important to check data for outliers.

7.5 8.0 6.5 24 8.5 6.5 7.0 7.5

Step by Step Solution

★★★★★

3.51 Rating (164 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Elementary Statistics Questions!

Late in 2018, Felix Machine Company (FMC) management was considering expansion of the company?s international business activities. FMC is a South Carolina?based manufacturer of compound machines for...

The file BabyWeight provides newborn weights for a simple random sample of 135 infants born in the United States in 1995. Can we conclude that the population from which this sample came is normally...

The Minneapolis Star Tribune newspaper has decided to write an article about gasoline prices in the Twin Cities area (Minneapolis and St. Paul). The Star Tribune has designed a survey and taken a...

Kale is a type of cabbage commonly found in salad and used in cooking in many parts of the world. Six measurements were made of the mineral content (in percent) of kale, with the following results....

Good evening, I need answers for the questions listed below please. If you need to use an excel sheet or a calculator, please do whatever works for you. I also write good reviews! 1.) A-D? Using the...

Good evening, I need answers to these questions please. I write fantastic reviews. Also if you need to use your calculator or an excel sheet please use what you need. 1.) Part 3? Check our blood...

My data says 95% and the one from this sight says 99% Sleeping outlier: A Simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night, The results...

. A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were 8.52497.586.58.56 Notice that one joker said that he sleeps 24...

A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were 8.52497.586.58.56 Notice that one joker said that he sleeps 24 hours...

Eat your cereal: Boxes of cereal are labeled as containing 14 ounces. Following are the weights, in ounces, of a sample of 14 boxes. It is reasonable to assume that the population is approximately...

Here is the best picture I can give you it has all the information a. My information says95% and b.says 95% Sleeping outlier; A simple random sample of eight college freshmen were asked how many...

1. What hedging options are available to DKNY? 2. What is the hedged cost of DKNYs payable using a forward market hedge? 3. What is the hedged cost of DKNYs payable using a money market hedge? 4....

As gas prices rose in March 2008, Americans drove 11 billion fewer miles than in March 2007. Realizing that prices are not going down, Americans are adapting to higher energy costs. Americans spend...

Treasury bills and bonds receive semiannual interest payments. Question 3 options: TrueFalse

How do the different types of memory interact in our everyday experience? (159)

Random samples of 2009 pickup trucks with 4-cylinder, 5-cylinder, 6-cylinder, and 8-cylinder engines were obtained. Each pickup truck was tested for miles per gallons in highway driving. Is there...

A number of sports enthusiasts have argued that Major League Baseball players on teams in the Central Division have an unfair advantage over coastal players in the Western and Eastern Divisions. This...

Cities across the United States have restaurants that offer themes associated with foreign countries. German-style food and drink have become popular since many communities started hosting...

The advertising manager for Bertolon Inc, a manufacturer of womens shoes, is currently working on a major promotional campaign. Her ideas include the installation of a new lighting system and...

You have been asked by the president of Ellis Construction Company, headquartered in Toledo, to evaluate the proposed acquisition of a new earthmover. The movers basic price is $40,000, and it will...

The Cullumber Hotel opened for business on May 1, 2022. Here is its trial balance before adjustment on May 31. CULLUMBER HOTEL Trial Balance May 31, 2022 Credit Debit $ 2,343 2,600 1,800 14,843...