Question: The article The Association Between Television Viewing and Irregular Sleep Schedules Among Children Less Than 3 Years of Age (Pediatrics [2005]: 851 856) reported the

The article €œThe Association Between Television Viewing and Irregular Sleep Schedules Among Children Less Than 3 Years of Age€ (Pediatrics [2005]: 851€“ 856) reported the accompanying 95% confidence intervals for average TV viewing time (in hours per day) for three different age groups.

a. Suppose that the sample sizes for each of the three age group samples were equal. Based on the given confidence intervals, which of the age group samples had the greatest variability in TV viewing time? Explain your choice.
b. Now suppose that the sample standard deviations for the three age group samples were equal, but that the three sample sizes might have been different. Which of the three age-group samples had the largest sample size? Explain your choice.
c. The interval (.768, 1.032) is either a 90% confidence interval or a 99% confidence interval for the mean TV viewing time computed using the sample data for children less than 12 months old. Is the confidence level for this interval 90% or 99%? Explain your choice.

95% Confidence Interval Age Group Less than 12 months 12 to 23 months 24 to 35 months

Step by Step Solution

★★★★★

3.49 Rating (172 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a For samples of equal sizes those with greater variability will result in wider confi... View full answer

Question Has Been Solved by an Expert!

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

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

536-M-S-R-S (203).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

The article Cooperative Hunting in Lions: The Role of the Individual (Behavioral Ecology and Sociobiology [1992]: 445454) discusses the different roles taken by lionesses as they attack and capture...

The authors of the article A Survey of Parent Attitudes and Practices Regarding Underage Drinking (Journal of Youth and Adolescence [1995]: 315334) conducted a telephone survey of parents with...

The article Regional Differences in Attitudes Toward Corporal Punishment (Journal of Marriage and Family [1994]: 314324) presents data resulting from a random sample of 978 adults. Each individual in...

9.45 The article The Association Between Television Viewing and Irregular Sleep Schedules Among Children Less Than 3 Years of Age (Pediatrics [2005]: 851 856) reported the accompanying 95% confidence...

The article The Association Between Television Viewing and Irregular Sleep Schedules Among Children Less Than 3 Years of Age (Pediatrics [2005]: 851 856) reported the accompanying 95% confidence...

=+9.36 The article The Association Between Television Viewing and Irregular Sleep Schedules Among Children Less Than 3 Years of Age (Pediatrics [2005]: 851856) reported the accompanying 95%...

Journal of Autism and Developmental Disorders, Vol. 32, No. 3, June 2002 ( 2002) Descriptive Epidemiology of Autism in a California Population: Who Is at Risk? Lisa A. Croen,1,3 Judith K. Grether,1...

AMERICAN JOURNAL OF HUMAN BIOLOGY 14:762-768 (2002) Is Obesity Associated With Poor Sleep Quality in Adolescents? NEERAJ K. GUPTA,1 WILLIAM H. MUELLER,1* WENYAW CHAN,1 AND JANET C. MEININGER2 I...

Virtual Reality: Augmenting the Acute Pain Experience in Children Samantha Diaz-Hennessey, Eileen R. O'Shea, and Kyle King Sickle cell disease affects approximately 100,000 Americans, and according...

Explain how R and S are related to and (+) (-).

Consider the rest of the world with free trade (production at 5, and consumption at C,), as shown in the graph on the right in Figure 4.4A. The international relative price of cloth now changes to...

Which of the following insures the value of the U.S. dollar? (A) The euro and other foreign currencies held by the Federal Reserve (B) Gold bars in secure locations like Fort Knox (C) The promise of...

A guest in a motel ofiened the bedroom window at night and went to sleep. During the night, a prowler pried open the screen, entered the room, and stole property ofthe guest. The guest sued the...

The histogram shows the monthly U.S. unemployment rate from January 2003 to January 2013 (data.bls.gov/timeseries/LNS14000000). Here is the time series plot for the same data. a) What features of the...

Here is a histogram of the monthly CPI as reported by the Bureau of Labor Statistics (ftp://ftp.bls.gov/pub/special.requests/cpi/cpiai.txt) from 2008 through 2012: Here is the time series plot for...

Here is a histogram of the assets (in millions of dollars) of 79 companies chosen from the Forbes list of the nations top corporations. a) What aspect of this distribution makes it difficult to...

Please zoom-in if you dont see the question, thank you. Pharoah Departmental Stores management has forecasted a growth rate of 40 percent for the next two years, followed by growth rates of 25...

Silver Sun Recycling has a weighted-average cost of capital of 8.34 percent and is evaluating two projects: A and B. Project A involves an initial investment of 4,818 dollars and an expected cash...

Which of the following statements is the most plausible explanation of the difference in observed net operating profit margins? Widget Co . and Tools Inc. both operate in the same industry. They are...