Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 9.4, Problem 17BSC
In Exercises 9–20, assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.
17. Harry Potter The Harry Potter books and movies grossed huge sums of money. The table below lists the amounts grossed (in millions of dollars) during the first few days of re-lease of the movies Harry Potter and the Half-Blood Prime and Harry Potter and tire Order of the Phoenix. Use a 0.05 significance level to test the claim that Harry Potter and tire Half-Blood Prince did better at the box office. Apart from this hypothesis test, what is a better way to judge the validity of the claim?
| Day of Release | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Phoenix | 44.2 | 18.4 | 25.8 | 28.3 | 23.0 | 10.4 | 9.1 | 8.4 | 7.6 | 10.2 |
| Prince | 58.2 | 22.0 | 26.8 | 29.2 | 21.8 | 9.9 | 9.5 | 7.5 | 6.9 | 9.3 |
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Chapter 9 Solutions
Elementary Statistics
Ch. 9.2 - Verifying Requirements In the largest clinical...Ch. 9.2 - Verifying Requirements In the largest clinical...Ch. 9.2 - Hypotheses and Conclusions Refer to the hypothesis...Ch. 9.2 - Using Confidence Intervals a. Assume that we want...Ch. 9.2 - Interpreting Displays. In Exercises 5 and 6, use...Ch. 9.2 - Interpreting Displays. In Exercises 5 and 6, use...Ch. 9.2 - Testing Claims About Proportions. In Exercises...Ch. 9.2 - Prob. 8BSCCh. 9.2 - Testing Claims About Proportions. In Exercises...Ch. 9.2 - Testing Claims About Proportions. In Exercises...
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