Fundamentals of Statistics (5th Edition)
5th Edition
ISBN: 9780134508306
Author: Michael Sullivan III
Publisher: PEARSON
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Textbook Question
Chapter B.5, Problem 1AYU
For Problems 1–8, find the critical value(s) for α:
NW 1. right-tailed test with α = 0.05, degrees of freedom in the numerator = 9, degrees of freedom in the denominator = 10.
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A researcher believes that the so-called “sugar high” is not real. He gathered 30 adolescents and recorded their activity level in the scale of 0 – 100 (0 = not active and 100 = super active). First, he recorded participants’ activity level before they consumed candy. After recording their pre-sugar activity level, the researcher gave out 5 Snickers bars to participants. Then, he recorded their post-sugar activity level. The average difference between post-sugar and pre-sugar activity level is 50 (i.e., the activity levels are higher after sugar than prior to it) with a standard deviation of 10.
A). Complete test statistic and critical values
B). Conclusion
A researcher believes that the so-called “sugar high” is not real. He gathered 30 adolescents and recorded their activity level in the scale of 0 – 100 (0 = not active and 100 = super active). First, he recorded participants’ activity level before they consumed candy. After recording their pre-sugar activity level, the researcher gave out 5 Snickers bars to participants. Then, he recorded their post-sugar activity level. The average difference between post-sugar and pre-sugar activity level is 50 (i.e., the activity levels are higher after sugar than prior to it) with a standard deviation of 10.
A). What is the type of test you will use? (z-test, single-sample t-test, paired-samples t-test, or independent samples t-test) and why (what information provided in the problem)B). What are the hypotheses (Be Specific)
Chapter B.5 Solutions
Fundamentals of Statistics (5th Edition)
Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - For Problems 18, find the critical value(s) for :...Ch. B.5 - In Problems 914, assume that the populations are...Ch. B.5 - In Problems 914, assume that the populations are...
Ch. B.5 - In Problems 914, assume that the populations are...Ch. B.5 - In Problems 914, assume that the populations are...Ch. B.5 - In Problems 914, assume that the populations are...Ch. B.5 - In Problems 914, assume that the populations are...Ch. B.5 - Elapsed Time to Earn a Bachelors Degree Clifford...Ch. B.5 - Prob. 16AYUCh. B.5 - Prob. 17AYUCh. B.5 - SAT Test Scores A researcher wants to know if...Ch. B.5 - Waiting Time in Line McDonalds executives want to...Ch. B.5 - Filling Machines A quality-control engineer wants...Ch. B.5 - Rates of Returns of Stocks Stocks may be...Ch. B.5 - Measuring Reaction Time Researchers at the...
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