STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 5.3, Problem 4JC
To determine
Find the percentage of all Dutch men who will be over 2 meters(6’6”) tallif a Normal model is appropriate and the standard deviation for men is about 8 cm.
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A local electronics store just received a shipment of 620 HDMI cables. The manager wants to estimate the number of defective HDMI cables in the shipment. Rather than checking every HDMI cable, the manager plans to take a simple random sample of size 62 in order to estimate the proportion of defective HDMI cables in the shipment. If the sample proportion of defective HDMI cables, p̂p̂, is greater than 0.0323 (there are more than two defective HDMI cables in the sample), the manager will file a complaint and request a new shipment.
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In regards to conducting a linear contrast after a one-way ANOVA, can you explain how seemingly arbitrary weights that "emphasize or de-emphasize" certain variables in a linear combination and sum to zero are able to provide information about how certain groups differ from each other? For example, if we havethree groups A, B, and C, and we want tocompare the mean of group A with theaverage of groups B and C, the weights inthis case are 1 for group A, and -0.5 for groupsB and C, which sum to zero. But how do these numbers model the relationship of comparing one group to the average of the other two? Does it have to do with how the math is carried out, such as how the test statistic is created?
Chapter 5 Solutions
STATS:DATA+MODELS-W/DVD
Ch. 5.1 - 1. Your statistics teacher has announced that the...Ch. 5.2 - Prob. 2JCCh. 5.2 - 4. A company manufactures wheels for in-line...Ch. 5.3 - 5. As a group, the Dutch are among the tallest...Ch. 5.3 - Prob. 5JCCh. 5 - Prob. 1ECh. 5 - 2. Mensa People with z-scores above 2.5 on an IQ...Ch. 5 - 3. Temperatures A town’s January high temperatures...Ch. 5 - 4. Placement exams An incoming freshman took her...Ch. 5 - 5. Shipments A company selling clothing on the...
Ch. 5 - 6. Hotline A company’s customer service hotline...Ch. 5 - 9. Guzzlers? Environmental Protection Agency (EPA)...Ch. 5 - 8. IQ Some IQ tests are standardized to a Normal...Ch. 5 - 17. Stats test, part II Suppose your Statistics...Ch. 5 - 13. Normal cattle The Virginia Cooperative...Ch. 5 - IQs revisited Based on the Normal model N(100, 16)...Ch. 5 - 11. Music library Corey has 4929 songs in his...Ch. 5 - 12. Wisconsin ACT math The histogram shows the...Ch. 5 - 19. Payroll Here are the summary statistics for...Ch. 5 - 20. Hams A specialty foods company sells “gourmet...Ch. 5 - 21. SAT or ACT? Each year thousands of high school...Ch. 5 - 22. Cold U? A high school senior uses the Internet...Ch. 5 - 11. Checkup One of the authors has an adopted...Ch. 5 - 23. Music library again Corey has 4929 songs in...Ch. 5 - 24. Windy In the last chapter, we looked at three...Ch. 5 - 25. Combining test scores The first Stats exam had...Ch. 5 - 26. Combining scores again The first Stat exam had...Ch. 5 - 27. Final exams Anna, a language major, took final...Ch. 5 - 28. MP3s Two companies market new batteries...Ch. 5 - 29. Cattle Using N(1152, 84), the Normal model for...Ch. 5 - 30. Car speeds 100 John Beale of Stanford,...Ch. 5 - Prob. 27ECh. 5 - Prob. 28ECh. 5 - Prob. 29ECh. 5 - Prob. 30ECh. 5 - Prob. 31ECh. 5 - Prob. 32ECh. 5 - Prob. 33ECh. 5 - Prob. 34ECh. 5 - Prob. 35ECh. 5 - 40. Rivets A company that manufactures rivets...Ch. 5 - Prob. 37ECh. 5 - Prob. 38ECh. 5 - Prob. 39ECh. 5 - Prob. 40ECh. 5 - Prob. 41ECh. 5 - 46. Customer database A large philanthropic...Ch. 5 - Prob. 43ECh. 5 - More IQs In the Normal model N(100, 16) from...Ch. 5 - Prob. 45ECh. 5 - Prob. 46ECh. 5 - Prob. 47ECh. 5 - 54. Tires A tire manufacturer believes that the...Ch. 5 - 55. Kindergarten Companies that design furniture...Ch. 5 - 56. Body temperatures Most people think that the...Ch. 5 - Prob. 51ECh. 5 - Prob. 52E
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