Bundle: Essentials Of Statistics For The Behavioral Sciences, 9th + Aplia, 1 Term Printed Access Card
9th Edition
ISBN: 9781337582513
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Chapter 1, Problem 15P
There is some evidence that people with a visible tattoo are considered to be less attractive than are people without a visible tattoo. Resenhoeft, Villa, and Wiseman (2008) showed one group of students a color photograph of a 24-year-old woman with a tattoo of a dragon on her arm. A second group of students was shown the same photograph but with the tattoo removed. Each participant was asked to rate the attractiveness of the woman in the photograph.
a. Identify the independent variable for this study.
b. What scale of measurement is used for the independent variable?
c. Identify the dependent variable for this study.
d. What scale of measurement is used for the dependent variable?
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Customers experiencing technical difficulty with their Internet cable service may call an 800 number for technical support. It takes the technician between 30 seconds and 11 minutes to resolve the problem. The distribution of this support time follows the uniform distribution.
Required:
a. What are the values for a and b in minutes?
Note: Do not round your intermediate calculations. Round your answers to 1 decimal place.
b-1. What is the mean time to resolve the problem?
b-2. What is the standard deviation of the time?
c. What percent of the problems take more than 5 minutes to resolve?
d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times?
Chapter 1 Solutions
Bundle: Essentials Of Statistics For The Behavioral Sciences, 9th + Aplia, 1 Term Printed Access Card
Ch. 1.1 - A researcher is interested in the fast-food eating...Ch. 1.1 - A researcher is curious about the average distance...Ch. 1.1 - What term is used for the statistical techniques...Ch. 1.1 - The SAT is standardized so that the average score...Ch. 1.2 - Prob. 1LCCh. 1.2 - A researcher studies the factors that determine...Ch. 1.2 - When measuring height to the nearest half inch,...Ch. 1.2 - Ranking a group of cities in terms of "quality of...Ch. 1.3 - In a correlational study, how many variables are...Ch. 1.3 - A research study comparing alcohol use for college...
Ch. 1.3 - A recent study reports that infant rats fed a diet...Ch. 1.4 - What value is represented by the uppercase letter...Ch. 1.4 - What is the value of (X + 1) for the following...Ch. 1.4 - What is the last step in the calculation of (X)2?...Ch. 1 - A researcher is interested in the texting habits...Ch. 1 - Define the terms population and sample, and...Ch. 1 - Statistical methods arc classified into two major...Ch. 1 - Define the terms statistic and parameter and...Ch. 1 - Explain why honesty is a hypothetical construct...Ch. 1 - A lax form asks people to identify their age....Ch. 1 - Four scales of measurement were introduced in this...Ch. 1 - Describe the data for a correlation research study...Ch. 1 - Describe how the goal of an experimental research...Ch. 1 - The results of a recent study showed that children...Ch. 1 - Gentile, Lynch, Linder, and Walsh (2004) surveyed...Ch. 1 - A research study comparing alcohol use for college...Ch. 1 - Stephens, Atkins, and Kingston (2009) conducted an...Ch. 1 - Ackerman and Goldsmith (2011) compared learning...Ch. 1 - There is some evidence that people with a visible...Ch. 1 - Guguen and Jacob (2012) asked waitresses to wear...Ch. 1 - Ford and Torok (2008) found that motivational...Ch. 1 - For the following scores, find the value of each...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - Two scores, X and Y, are recorded for each of n =...Ch. 1 - Use summation notation lo express each of the...Ch. 1 - For the following set of stores, find the value of...
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