STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 14, Problem 10E
To determine
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Explain why table is better than a tree here.
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Chapter 14 Solutions
STATS:DATA+MODELS-W/DVD
Ch. 14.1 - 1. Back in Chapter 1, we suggested that you sample...Ch. 14.3 - JUST CHECKING
4. The American Association for...Ch. 14.4 - JUST CHECKING
5. Remember our sample of pages in...Ch. 14 - Prob. 1ECh. 14 - Cooking and shopping Forty-five percent of...Ch. 14 - Sports What is the probability that a person likes...Ch. 14 - Sports again From Exercise 3, if someone doesn’t...Ch. 14 - Late to the train A student figures that he has a...Ch. 14 - Field goals A nervous kicker usually makes 70% of...Ch. 14 - Titanic On the Titanic, the probability of...
Ch. 14 - Births If the sex of a child is independent of all...Ch. 14 - Facebook Facebook reports that 70% of its users...Ch. 14 - Online banking A national survey indicated that...Ch. 14 - Facebook again Suppose that the information in...Ch. 14 - Online banking again Suppose that the information...Ch. 14 - Facebook final Given the probabilities in Exercise...Ch. 14 - Online banking last time Given the probabilities...Ch. 14 - Phones Recent research suggests that 73% of...Ch. 14 - Travel Suppose the probability that a U.S....Ch. 14 - Amenities A check of dorm rooms on a large college...Ch. 14 - Workers Employment data at a large company reveal...Ch. 14 - Global survey The marketing research organization...Ch. 14 - Birth order A survey of students in a large...Ch. 14 - 21. Cards You draw a card at random front a...Ch. 14 - Pets In its monthly report, the local animal...Ch. 14 - 59. Health The probabilities that an adult...Ch. 14 - 60. Immigration The table shows the political...Ch. 14 - 25. Global survey, take 2 Look again at the table...Ch. 14 - 26. Birth order, take 2 Look again at the data...Ch. 14 - Sick kids Seventy percent of kids who visit a...Ch. 14 - Sick cars Twenty percent of cars that are...Ch. 14 - 29. Cards You are dealt a hand of three cards, one...Ch. 14 - 30. Another hand You pick three cards at random...Ch. 14 - 63. Batteries A junk box in your room contains a...Ch. 14 - 64. Shirts The soccer team’s shirts have arrived...Ch. 14 - 65. Eligibility A university requires its biology...Ch. 14 - 66. Benefits Fifty-six percent of all American...Ch. 14 - 35. Cell phones in the home A survey found that...Ch. 14 - Prob. 36ECh. 14 - Prob. 37ECh. 14 - Prob. 38ECh. 14 - Prob. 39ECh. 14 - 40. Birth order, finis In Exercises 20 and 26, we...Ch. 14 - Prob. 41ECh. 14 - Prob. 42ECh. 14 - Prob. 43ECh. 14 - Prob. 44ECh. 14 - Prob. 45ECh. 14 - Prob. 46ECh. 14 - Prob. 47ECh. 14 - Prob. 48ECh. 14 - Prob. 49ECh. 14 - Prob. 50ECh. 14 - Prob. 51ECh. 14 - Prob. 52ECh. 14 - Prob. 53ECh. 14 - Prob. 54ECh. 14 - Prob. 55ECh. 14 - 82. No-shows An airline offers discounted...Ch. 14 - Prob. 57ECh. 14 - Prob. 58ECh. 14 - Prob. 59ECh. 14 - Prob. 60E
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- At the same restaurant as in Question 19 with the same normal distribution, what's the chance of it taking no more than 15 minutes to get service?arrow_forwardClint, obviously not in college, sleeps an average of 8 hours per night with a standard deviation of 15 minutes. What's the chance of him sleeping between 7.5 and 8.5 hours on any given night? 0-(7-0) 200 91109s and doiw $20 (8-0) mol 8520 slang $199 galbrog seam side pide & D (newid se od poyesvig as PELEO PER AFTE editiw noudab temand van Czarrow_forwardTimes to complete a statistics exam have a normal distribution with a mean of 40 minutes and standard deviation of 6 minutes. Deshawn's time comes in at the 90th percentile. What percentage of the students are still working on their exams when Deshawn leaves?arrow_forward
- Suppose that the weights of cereal boxes have a normal distribution with a mean of 20 ounces and standard deviation of half an ounce. A box that has a standard score of o weighs how much? syed by ilog ni 21arrow_forwardBob scores 80 on both his math exam (which has a mean of 70 and standard deviation of 10) and his English exam (which has a mean of 85 and standard deviation of 5). Find and interpret Bob's Z-scores on both exams to let him know which exam (if either) he did bet- ter on. Don't, however, let his parents know; let them think he's just as good at both subjects. algas 70) sering digarrow_forwardSue's math class exam has a mean of 70 with a standard deviation of 5. Her standard score is-2. What's her original exam score?arrow_forward
- Clint sleeps an average of 8 hours per night with a standard deviation of 15 minutes. What's the chance he will sleep less than 7.5 hours tonight? nut bow visarrow_forwardSuppose that your score on an exam is directly at the mean. What's your standard score?arrow_forwardOne state's annual rainfall has a normal dis- tribution with a mean of 100 inches and standard deviation of 25 inches. Suppose that corn grows best when the annual rainfall is between 100 and 150 inches. What's the chance of achieving this amount of rainfall? wved now of sociarrow_forward
- 13 Suppose that your exam score has a standard score of 0.90. Does this mean that 90 percent of the other exam scores are lower than yours?arrow_forwardBob's commuting times to work have a nor- mal distribution with a mean of 45 minutes and standard deviation of 10 minutes. How often does Bob get to work in 30 to 45 minutes?arrow_forwardBob's commuting times to work have a nor- mal distribution with a mean of 45 minutes and standard deviation of 10 minutes. a. What percentage of the time does Bob get to work in 30 minutes or less? b. Bob's workday starts at 9 a.m. If he leaves at 8 a.m., how often is he late?arrow_forward
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