Essentials of Statistics (6th Edition)
6th Edition
ISBN: 9780134685779
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11.1, Problem 10BSC
In Exercises 5–20, conduct the hypothesis test and provide the test statistic and the P-value and /or critical value, and state the conclusion.
10. Do World War II Bomb Hits Fit a Poisson Distribution? In analyzing hits by V-l buzz bombs in World War II, South London was subdivided into regions, each with an area of 0.25 km2. Shown below is a table of actual frequencies of hits and the frequencies expected with the Poisson distribution. (The Poisson distribution is described in Section 5-3.) Use the values listed and a 0.05 significance level to test the claim that the actual frequencies fit a Poisson distribution. Does the result prove that the data conform to the Poisson distribution?
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Chapter 11 Solutions
Essentials of Statistics (6th Edition)
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Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - In Exercises 520, conduct the hypothesis test and...Ch. 11.1 - Ben fords Law. According to Benfords law, a...Ch. 11.1 - Ben fords Law. According to Benfords law, a...Ch. 11.1 - Ben fords Law. According to Benfords law, a...Ch. 11.1 - Ben fords Law. According to Benfords law, a...Ch. 11.1 - Assumed mid-point x=fxn=39825180=221.25...Ch. 11.2 - Handedness and Cell Phone Use The accompanying...Ch. 11.2 - Ear Preference for Cell Phone Use 2. Hypotheses...Ch. 11.2 - Hypothesis Test The accompanying TI-83/84 Plus...Ch. 11.2 - Right-Tailed, Left-Tailed, Two-Tailed Is the...Ch. 11.2 - Prob. 5BSCCh. 11.2 - In Exercises 5-18, test the given claim. 6. Splint...Ch. 11.2 - In Exercises 5-18, test the given claim. 7....Ch. 11.2 - Prob. 8BSCCh. 11.2 - In Exercises 5-18, test the given claim. 9. Four...Ch. 11.2 - In Exercises 5-18, test the given claim. 10....Ch. 11.2 - In Exercises 5-18, test the given claim. 11....Ch. 11.2 - In Exercises 5-18, test the given claim. 12. Nurse...Ch. 11.2 - Soccer Strategy In soccer, serious fouls in the...Ch. 11.2 - In Exercises 5-18, lest the given claim. 14. Is...Ch. 11.2 - In Exercises 518, test the given claim. 15....Ch. 11.2 - In Exercises 5-18, test the given claim. 16....Ch. 11.2 - Prob. 17BSCCh. 11.2 - In Exercises 5-18, test the given claim. 18....Ch. 11.2 - In Exercises 5-18, lest the given claim. 19. Car...Ch. 11.2 - Is the Home Field Advantage Independent of the...Ch. 11.2 - Equivalent Tests A X2 test involving a 2 2 table...Ch. 11.2 - Using Yatess Correction for Continuity The...Ch. 11.3 - In Exercises 1-4, use the following listed arrival...Ch. 11.3 - In Exercises 1-4, use the following listed arrival...Ch. 11.3 - In Exercises 1-4, use the following listed arrival...Ch. 11.3 - In Exercises 1-4, use the following listed arrival...Ch. 11.3 - In Exercises 5-16, use analysis of variance for...Ch. 11.3 - In Exercises 5-16, use analysis of variance for...Ch. 11.3 - In Exercises 5-16, use analysis of variance for...Ch. 11.3 - In Exercises 5-16, use analysis of variance for...Ch. 11.3 - In Exercises 5-16, use analysis of variance for...Ch. 11.3 - Prob. 10BSCCh. 11.3 - Triathlon Times Jeff Parent is a statistics...Ch. 11.3 - Arsenic in Rice Listed below are amounts of...Ch. 11.3 - Prob. 13BSCCh. 11.3 - Speed Dating Listed below are attribute ratings of...Ch. 11.3 - Tukey Test A display of the Bonferroni test...Ch. 11.3 - Two-Way ANOVA The pulse rates in Table 12-3 from...Ch. 11 - Exercises 1-5 refer to the sample data in the...Ch. 11 - Exercises 15 refer to the sample data in the...Ch. 11 - Exercises 15 refer to the sample data in the...Ch. 11 - Prob. 4CQQCh. 11 - Exercises 15 refer to the sample data in the...Ch. 11 - Questions 610 refer to the sample data in the...Ch. 11 - Questions 610 refer to the sample data in the...Ch. 11 - Questions 6-10 refer to the sample data in the...Ch. 11 - Questions 6-10 refer to the sample data in the...Ch. 11 - Motor Vehicle Fatalities The table below lists...Ch. 11 - Tooth Fillings The table below shows results from...Ch. 11 - American Idol Contestants on the TV show American...Ch. 11 - Clinical Trial of Lipitor Lipitor is the trade...Ch. 11 - Weather-Related Deaths For a recent year, the...Ch. 11 - Weather-Related Deaths Review Exercise 5 involved...Ch. 11 - Chocolate and Happiness In a survey sponsored by...Ch. 11 - Chocolate and Happiness Use the results from part...Ch. 11 - Chocolate and Happiness Use the results from part...Ch. 11 - One Big Bill or Many Smaller Bills In a study of...Ch. 11 - 6. Probability Refer to the results from the 150...Ch. 11 - Car Repair Costs Listed below are repair costs (in...Ch. 11 - Forward Grip Reach and Ergonomics When designing...Ch. 11 - Use Statdisk, Minitab, Excel, StatCrunch, a...Ch. 11 - FROM DATA TO DECISION Critical Thinking: Was...Ch. 11 - Cola Weights Data Set 26 Cola Weights and Volumes...Ch. 11 - Speed Dating Data Set 18 Speed Dating in Appendix...Ch. 11 - Author Readability Pages were randomly selected by...
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- In Exercises 5–16, use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Speed Dating: Attributes Listed below are “attribute” ratings made by participants in a speed dating session. Each attribute rating is the sum of the ratings of five attributes (sincerity, intelligence, fun, ambition, shared interests). The listed ratings are from Data Set 18 “Speed Dating” in Appendix B. Use a 0.05 significance level to test the claim that there is a difference between female attribute ratings and male attribute ratings.arrow_forwardIn Exercises 5–16, use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Two Heads Are Better Than One Listed below are brain volumes (cm3 ) of twins from Data Set 8 “IQ and Brain Size” in Appendix B. Construct a 99% confidence interval estimate of the mean of the differences between brain volumes for the first-born and the second-born twins. What does the confidence interval suggest?arrow_forwardAs part of a quality control process for computer chips, an engineer at a factory randomly samples 212 chips during a week of production to test the current rate of chips with severe defects. She finds that 50 of the chips are defective. A. What is the population under consideration in the data set? B.What parameter is being estimated? C. What is the point estimate for the parameter? D. The historical rate of defects at the factory is 10%. If this is still the rate of defects, describe the sampling distribution of sample proportions of defective chips. Be sure to check the appropriate conditions and include the shape, center, spread, and a well-labeled sketch of the sampling distribution. E. Based on your sketch from Part (D) and the point estimate you found in Part (C), do you think the rate of defects is still 10%? Why or why not?arrow_forward
- The National Center for Education Statistics reports that the proportion of college freshmen who return to the same school for their sophomore year is 0.71. Suppose we select a random sample of 490 freshmen from across the nation. What is the expected value of the sampling distribution model for the proportion of 490 freshmen that will return to the same school for their sophomore year? a) What is the standard deviation of the sampling distribution model for the proportion of 490 freshmen that will return to the same school for their sophomore year? b) What is the probability that the proportion of these 490 freshmen that return to the same school for their sophomore year is less than 0.66?arrow_forward1a. If the parameter is 5.5, which sampling distribution are unbiased? Why? 1b. Which of the sampling distributions is the best estimator of the parameter? Why? 1c. Which of the choices has low variability and high bias? Why?arrow_forward
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