Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 10.3, Problem 19BSC
Regression and Predictions. Exercises 13-28 use the same data sets as Exercises 13-28 in Section 10-2. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5.
19. Galaxy Distances The cluster Hydra has a measured redshift of 0.0126. Find the best predicted distance to that cluster. Is the result close to the actual distance of 0.18 billion light-years?
| Redshift | 0.0233 | 0.0639 | 0.0718 | 0.0395 | 0.0438 | 0.0103 |
| Distance | 0.32 | 0.75 | 1.00 | 0.55 | 0.61 | 0.14 |
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1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
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State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
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2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
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Statistics
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find the mean.
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with mean zen and variance 6
A psychology researcher conducted a Chi-Square Test of Independence to examine whether there is a relationship between college students’ year in school (Freshman, Sophomore, Junior, Senior) and their preferred coping strategy for academic stress (Problem-Focused, Emotion-Focused, Avoidance). The test yielded the following result:
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Interpret the results of this analysis. In your response, clearly explain:
Whether the result is statistically significant and why.
What this means about the relationship between year in school and coping strategy.
What the researcher should conclude based on these findings.
Chapter 10 Solutions
Elementary Statistics
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