Elementary Statistics Using the TI-83/84 Plus Calculator Books a la carte Plus NEW MyLab Statistics with Pearson eText - Access Card Package (4th Edition)
4th Edition
ISBN: 9780133873795
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 2.3, Problem 20BB
a.
To determine
To identify: Thepossible values of the largest height included in the histogram.
To express: Thevalues in feet and inches.
b.
To determine
To explain: The reason is that the people with heights between 43 inches and 55 inches are the tallest people because they have the tallest bars in the histogram is wrong.
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Reconsider the patient satisfaction data in Table 1. Fit a multiple regression model using both patient age and
severity as the regressors.
(a) Test for significance of regression.
(b) Test for the individual contribution of the two regressors. Are both regressor variables needed in the model?
(c) Has adding severity to the model improved the quality of the model fit? Explain your answer.
The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at
random on voltage are as follows: 10.35, 9.30, 10.00, 9.96, 11.65, 12.00, 11.25, 9.58, 11.54, 9.95, 10.28, 8.37,
10.44, 9.25, 9.38, and 10.85.
(a) Test the hypothesis that the mean voltage equals 12 V against a two-sided alternative using a = 0.05.
(b) Construct a 95% two-sided confidence interval on μ.
(c) Test the hypothesis that σ² = 11 using α = 0.05.
(d) Construct a 95% two-sided confidence interval on σ.
(e) Construct a 95% upper confidence interval on σ.
(f) Does the assumption of normality seem reasonable for the output voltage?
Analyze the residuals from the regression model on the patient satisfaction data from Exercise 3. Comment on
the adequacy of the regression model.
Chapter 2 Solutions
Elementary Statistics Using the TI-83/84 Plus Calculator Books a la carte Plus NEW MyLab Statistics with Pearson eText - Access Card Package (4th Edition)
Ch. 2.2 - Prob. 1BSCCh. 2.2 - Prob. 2BSCCh. 2.2 - Prob. 3BSCCh. 2.2 - Prob. 4BSCCh. 2.2 - Prob. 5BSCCh. 2.2 - Prob. 6BSCCh. 2.2 - Prob. 7BSCCh. 2.2 - Prob. 8BSCCh. 2.2 - Prob. 9BSCCh. 2.2 - Prob. 10BSC
Ch. 2.2 - Prob. 11BSCCh. 2.2 - Prob. 12BSCCh. 2.2 - Prob. 13BSCCh. 2.2 - Normal Distributions. In Exercises 11-14, answer...Ch. 2.2 - Relative Frequencies for Comparisons. In Exercises...Ch. 2.2 - Relative Frequencies for Comparisons. In Exercises...Ch. 2.2 - Cumulative Frequency Distributions. In Exercises...Ch. 2.2 - Cumulative Frequency Distributions. In Exercises...Ch. 2.2 - 17. Analysis of Last Digits Heights of statistics...Ch. 2.2 - 18. Analysis of Last Digits Weights of respondents...Ch. 2.2 - Constructing Frequency Distributions. In Exercises...Ch. 2.2 - Constructing Frequency Distributions. In Exercises...Ch. 2.2 - Constructing Frequency Distributions. In Exercises...Ch. 2.2 - Constructing Frequency Distributions. In Exercises...Ch. 2.2 - Constructing Frequency Distributions. In Exercises...Ch. 2.2 - Prob. 26BSCCh. 2.2 - Prob. 27BSCCh. 2.2 - Prob. 28BSCCh. 2.2 - Prob. 29BSCCh. 2.2 - Prob. 30BSCCh. 2.2 - Prob. 31BSCCh. 2.2 - Prob. 32BSCCh. 2.2 - Prob. 33BBCh. 2.3 - Prob. 1BSCCh. 2.3 - Prob. 2BSCCh. 2.3 - Prob. 3BSCCh. 2.3 - Prob. 4BSCCh. 2.3 - Prob. 5BSCCh. 2.3 - Interpreting a Histogram. In Exercises 5-8, answer...Ch. 2.3 - Interpreting a Histogram. In Exercises 5-8, answer...Ch. 2.3 - Interpreting a Histogram. In Exercises 5-8, answer...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Constructing Histograms. In Exercises 9–18,...Ch. 2.3 - Prob. 16BSCCh. 2.3 - Prob. 17BSCCh. 2.3 - Prob. 18BSCCh. 2.3 - Prob. 19BBCh. 2.3 - Prob. 20BBCh. 2.4 - Prob. 1BSCCh. 2.4 - Prob. 2BSCCh. 2.4 - Prob. 3BSCCh. 2.4 - 4. SAT Scores Given that the data in Exercise 3...Ch. 2.4 - Prob. 5BSCCh. 2.4 - Prob. 6BSCCh. 2.4 - Prob. 7BSCCh. 2.4 - Scatterplots. In Exercises 5–8, use the given...Ch. 2.4 - Prob. 9BSCCh. 2.4 - Prob. 10BSCCh. 2.4 - Prob. 15BSCCh. 2.4 - Prob. 16BSCCh. 2.4 - Prob. 19BSCCh. 2.4 - Prob. 20BSCCh. 2.4 - Prob. 21BSCCh. 2.4 - Deceptive Graphs. In Exercises 21-24, identify the...Ch. 2.4 - Prob. 23BSCCh. 2.4 - Deceptive Graphs. In Exercises 21-24, identify the...Ch. 2.4 - Prob. 25BBCh. 2 - Prob. 1CQQCh. 2 - Prob. 2CQQCh. 2 - Prob. 3CQQCh. 2 - 4. A stemplot is created from the intervals (min)...Ch. 2 - Prob. 5CQQCh. 2 - Prob. 6CQQCh. 2 - Prob. 7CQQCh. 2 - Prob. 8CQQCh. 2 - Prob. 9CQQCh. 2 - Prob. 10CQQCh. 2 - Prob. 1RECh. 2 - Prob. 2RECh. 2 - Prob. 5RECh. 2 - CO and NO Emissions Exercise 5 lists the amounts...Ch. 2 - Prob. 1CRECh. 2 - Prob. 2CRECh. 2 - Prob. 3CRECh. 2 - Prob. 4CRECh. 2 - Prob. 5CRECh. 2 - Prob. 6CRECh. 2 - Prob. 7CRECh. 2 - Prob. 1TPPCh. 2 - Prob. 1FDDCh. 2 - Prob. 2FDDCh. 2 - Prob. 3FDD
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