Modern Business Statistics with Microsoft Excel (MindTap Course List)
5th Edition
ISBN: 9781285433301
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
Publisher: Cengage Learning
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Chapter 18, Problem 41SE
To determine
Check whether there is significant weight gain for the chicken or not.
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Solve for X. Explain each step.
2^2x • 2^-4=8
One hundred people were surveyed, and one question pertained to their educational background. The results of this question and their genders are given in the following table.
Female (F)
Male (F′)
Total
College degree (D)
30
20
50
No college degree (D′)
30
20
50
Total
60
40
100
If a person is selected at random from those surveyed, find the probability of each of the following events.1. The person is female or has a college degree. Answer:
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2. The person is male or does not have a college degree. Answer:
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3. The person is female or does not have a college degree.
need help with part b
Chapter 18 Solutions
Modern Business Statistics with Microsoft Excel (MindTap Course List)
Ch. 18.1 - 1. The following hypothesis test is to be...Ch. 18.1 - 2. Ten individuals participated in a taste test...Ch. 18.1 - 3. The median number of part-time employees at...Ch. 18.1 - 4. Net assets for the 50 largest stock mutual...Ch. 18.1 - Prob. 5ECh. 18.1 - Prob. 6ECh. 18.1 - Prob. 7ECh. 18.1 - Prob. 8ECh. 18.1 - Prob. 9ECh. 18.1 - Prob. 10E
Ch. 18.1 - Prob. 11ECh. 18.2 - 12. Two fuel additives are tested to determine...Ch. 18.2 - 13. A sample of 10 men was used in a study to test...Ch. 18.2 - Percents of on-time arrivals for flights in 2006...Ch. 18.2 - Prob. 15ECh. 18.2 - Prob. 16ECh. 18.2 - Prob. 17ECh. 18.3 - Two fuel additives are being tested to determine...Ch. 18.3 - Samples of starting annual salaries for...Ch. 18.3 - The gap between the earnings of men and women with...Ch. 18.3 - Prob. 21ECh. 18.3 - Prob. 22ECh. 18.3 - Police records show the following numbers of daily...Ch. 18.3 - A certain brand of microwave oven was priced at 10...Ch. 18.3 - Prob. 25ECh. 18.4 - A sample of 15 consumers provided the following...Ch. 18.4 - Three admission test preparation programs are...Ch. 18.4 - Prob. 28ECh. 18.4 - Prob. 29ECh. 18.4 - A large corporation sends many of its first-level...Ch. 18.4 - Prob. 31ECh. 18.5 - Prob. 32ECh. 18.5 - 33. Consider the following two sets of rankings...Ch. 18.5 - Prob. 34ECh. 18.5 - Prob. 35ECh. 18.5 - 36. The rankings of a sample of professional...Ch. 18.5 - Prob. 37ECh. 18 - 38. A survey asked the following question: Do you...Ch. 18 - Prob. 39SECh. 18 - Prob. 40SECh. 18 - Prob. 41SECh. 18 - Prob. 42SECh. 18 - Prob. 43SECh. 18 - Prob. 44SECh. 18 - Prob. 45SECh. 18 - Prob. 46SECh. 18 - Prob. 47SE
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- Suppose you know that Bob's test score is above the mean, but he doesn't remember by how much. At least how many students must score lower than Bob?arrow_forwardIf a baby's weight is at the median, what's her percentile?arrow_forwardAt 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_forward
- Clint, 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_forwardSuppose 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_forward
- Bob 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_forwardClint 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_forward
- Suppose 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_forward13 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_forward
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