LMS Integrated MindTap Psychology, 1 term (6 months) Printed Access Card for Gravetter/Wallnau/Forzano's Essentials of Statistics for the Behavioral Sciences, 9th
9th Edition
ISBN: 9781337275163
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 17P
Ford and Torok (2008) found that motivational signs were effective in increasing physical activity on a college campus. Signs such as “Step up to a healthier lifestyle” and “An average person bums 10 calories a minute walking up the stairs” were posted by the elevators and stairs in a college building. Students and faculty increased their use of the stairs during times that the signs were posted compared to times when there were no signs.
a. Identify the independent and dependent variables for this study.
b. What scale of measurement is used for the independent variable?
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Question 2
The data below provides the battery life of thirty eight (38) motorcycle batteries.
100 83 83 105 110 81 114
99 101 105 78 115 74 96
106
89
94 81 106 91 93 86
79 103 94 108 113 100
117 120
77 93
93 85 76
89 78 88
680
a. Test the hypothesis that mean battery life is greater than 90. Use the 1% level of
significance.
b. Determine if the mean battery life is different from 80. Use the 10% level of
significance. Show all steps for the hypothesis test
c. Would your conlcusion in part (b) change at the 5% level of significance? |
d. Confirm test results in part (b) using JASP. Note: All JASP input files and output
tables should be provided
Suppose that 80% of athletes at a certain college graduate. You randomly select eight athletes. What’s the chance that at most 7 of them graduate?
Suppose that you flip a fair coin four times. What’s the chance of getting at least one head?
Chapter 1 Solutions
LMS Integrated MindTap Psychology, 1 term (6 months) Printed Access Card for Gravetter/Wallnau/Forzano's Essentials of Statistics for the Behavioral Sciences, 9th
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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