Understandable Statistics: Concepts and Methods
12th Edition
ISBN: 9781337119917
Author: Charles Henry Brase, Corrinne Pellillo Brase
Publisher: Cengage Learning
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Chapter 5, Problem 6CRP
a.
To determine
Calculate the
b.
To determine
Calculate the expected age of the moose killed by a wolf.
Calculate the standard deviation of ages.
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A common belief among doctors, nurses and other medical professionals is that lunar cycle influences human behavior, such as the quality of sleep. In a recent study, a scientist was interested in investigating whether there is a significant difference in the number of sleeping hours in different moon phases: waxing crescent, full moon, and waning crescent. Participants’ number hour of sleep were recorded in the table below.
Quality of sleeps (in number of hours)
Waxing Crescent
Full Moon
Waning Crescent
7
8
9
7
8
4
5
4
3
6
5
7
8
9
6
What are the groups being compared? That is, what are the levels of the IV?
What is the IV?
What is the level of measurement of the IV?
The authors of a paper compared two different methods for measuring body fat percentage. One method uses ultrasound, and the other method uses X-ray technology. Body fat percentages using each of these methods for 16 athletes (a subset of the data given in a graph that appeared in the paper) are given in the accompanying table. You can assume that the 16 athletes who
participated in this study are representative of the population of athletes.
Athlete X-ray Ultrasound
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5.00
8.00
9.25
12.00
17.25
29.50
5.50
6.00
8.00
13.50
9.25
11.00
12.00
14.00
17.00
18.00
4.25
4.75
9.00
11.75
17.00
27.50
6.50
6.75
8.75
14.50
9.50
12.00
12.25
15.50
18.00
18.25
Use these data to estimate the difference in mean body fat percentage measurement for the two methods.
Use a confidence level of 95%. (Use μ = MX-ray-Multrasound. Round your answers to three decimal places.)
× %
Interpret the interval in context.
O There is a 95% chance that the true mean body fat percentage…
Chapter 5 Solutions
Understandable Statistics: Concepts and Methods
Ch. 5.1 - Statistical Literacy Which of the following are...Ch. 5.1 - Statistical Literacy Which of the following are...Ch. 5.1 - Statistical Literacy Consider each distribution....Ch. 5.1 - Prob. 4PCh. 5.1 - Prob. 5PCh. 5.1 - Statistical Literacy Consider the probability...Ch. 5.1 - Basic Computation: Expected Value and Standard...Ch. 5.1 - Basic Computation: Expected Value For a...Ch. 5.1 - Critical Thinking: Simulation We can use the...Ch. 5.1 - Marketing: Age What is the age distribution of...
Ch. 5.1 - Marketing: Income What is the income distribution...Ch. 5.1 - History: Florence Nightingale What was the age...Ch. 5.1 - Fishing: Trout The following data are based on...Ch. 5.1 - Criminal Justice: Parole USA Today reported that...Ch. 5.1 - Prob. 15PCh. 5.1 - Prob. 16PCh. 5.1 - Expected Value: Life Insurance Jim is a...Ch. 5.1 - Expected Value: Life Insurance Sara is a...Ch. 5.1 - Prob. 19PCh. 5.1 - Prob. 20PCh. 5.1 - Combination of Random Variables: Insurance Risk...Ch. 5.2 - Statistical Literacy What does the random variable...Ch. 5.2 - Prob. 2PCh. 5.2 - Statistical Literacy For a binomial experiment,...Ch. 5.2 - Prob. 4PCh. 5.2 - Interpretation Suppose you are a hospital manager...Ch. 5.2 - Prob. 6PCh. 5.2 - Prob. 7PCh. 5.2 - Prob. 8PCh. 5.2 - Critical Thinking According to the college...Ch. 5.2 - Prob. 10PCh. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - Prob. 17PCh. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - Prob. 22PCh. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - Prob. 26PCh. 5.2 - Binomial Distribution Table: Symmetry Study the...Ch. 5.2 - Prob. 28PCh. 5.2 - Prob. 29PCh. 5.2 - In each of the following problems, the binomial...Ch. 5.2 - Prob. 31PCh. 5.2 - Prob. 32PCh. 5.3 - Statistical Literacy What does the expected value...Ch. 5.3 - Statistical Literacy Consider two binomial...Ch. 5.3 - Basic Computation: Expected Value and Standard...Ch. 5.3 - Basic Computation: Expected Value and Standard...Ch. 5.3 - Critical Thinking Consider a binomial distribution...Ch. 5.3 - Prob. 6PCh. 5.3 - Prob. 7PCh. 5.3 - Prob. 8PCh. 5.3 - Critical Thinking Consider a binomial distribution...Ch. 5.3 - Prob. 10PCh. 5.3 - Sports: Surfing In Hawaii, January is a favorite...Ch. 5.3 - Quality Control: Syringes The quality-control...Ch. 5.3 - Private Investigation: Locating People Old Friends...Ch. 5.3 - Ecology: Hawaiian Tsunamis A tidal wave or tsunami...Ch. 5.3 - Education: Illiteracy USA Today reported that...Ch. 5.3 - Rude Drivers: Tailgating Do you tailgate the car...Ch. 5.3 - Hype: Improved Products The Wall Street Journal...Ch. 5.3 - Prob. 18PCh. 5.3 - Prob. 19PCh. 5.3 - Defense: Radar Stations The probability that a...Ch. 5.3 - Criminal Justice: Jury Duty Have you ever tried to...Ch. 5.3 - Public Safety: 911 Calls The Denver Post reported...Ch. 5.3 - Law Enforcement: Property Crime Does crime pay?...Ch. 5.3 - Prob. 24PCh. 5.3 - Prob. 25PCh. 5.3 - Prob. 26PCh. 5.3 - Prob. 27PCh. 5.3 - Critical Thinking Let r be a binomial random...Ch. 5.4 - Statistical Literacy For a binomial experiment,...Ch. 5.4 - Statistical Literacy When using the Poisson...Ch. 5.4 - Critical Thinking Suppose we have a binomial...Ch. 5.4 - Critical Thinking Suppose we have a binomial...Ch. 5.4 - Prob. 5PCh. 5.4 - Prob. 6PCh. 5.4 - Prob. 7PCh. 5.4 - Prob. 8PCh. 5.4 - College: Core Requirement Susan is taking Western...Ch. 5.4 - Law: Bar Exam Bob is a recent law school graduate...Ch. 5.4 - Sociology: Hawaiians On the leeward side of the...Ch. 5.4 - Prob. 12PCh. 5.4 - Prob. 13PCh. 5.4 - Archaeology: Artifacts At Burnt Mesa Pueblo, in...Ch. 5.4 - Ecology: River Otters In his doctoral thesis, L....Ch. 5.4 - Law Enforcement: Shoplifting The Denver Post...Ch. 5.4 - Prob. 17PCh. 5.4 - Engineering: Cracks Henry Petroski is a professor...Ch. 5.4 - Prob. 19PCh. 5.4 - Earthquakes: San Andreas Fault USA Today reported...Ch. 5.4 - Prob. 21PCh. 5.4 - Prob. 22PCh. 5.4 - Prob. 23PCh. 5.4 - Prob. 24PCh. 5.4 - Prob. 25PCh. 5.4 - Prob. 26PCh. 5.4 - Prob. 27PCh. 5.4 - Prob. 28PCh. 5.4 - Prob. 29PCh. 5.4 - Prob. 30PCh. 5.4 - Prob. 31PCh. 5.4 - Prob. 32PCh. 5.4 - Prob. 33PCh. 5 - Prob. 1CRPCh. 5 - Prob. 2CRPCh. 5 - Prob. 3CRPCh. 5 - Prob. 4CRPCh. 5 - Prob. 5CRPCh. 5 - Prob. 6CRPCh. 5 - Prob. 7CRPCh. 5 - Prob. 8CRPCh. 5 - Prob. 9CRPCh. 5 - Airlines: On-Time Arrivals Consumer Reports rated...Ch. 5 - Prob. 11CRPCh. 5 - Prob. 12CRPCh. 5 - Prob. 13CRPCh. 5 - Prob. 14CRPCh. 5 - Prob. 15CRPCh. 5 - Prob. 16CRPCh. 5 - Prob. 17CRPCh. 5 - Prob. 18CRPCh. 5 - Prob. 19CRPCh. 5 - Prob. 20CRPCh. 5 - Prob. 2DHCh. 5 - Prob. 2LCCh. 5 - Prob. 4LCCh. 5 - Prob. 1UTCh. 5 - Prob. 2UTCh. 5 - Prob. 3UTCh. 5 - Prob. 4UTCh. 5 - Prob. 5UTCh. 5 - Prob. 6UTCh. 5 - Binomial Distributions Although tables of binomial...
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