# Find pe and f a 236 b 336 c 436 d 536 for use the

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Chapter 9 / Exercise 39
Precalculus
Hostetler/Larson Expert Verified
13. Find P(E and F)A. 2/36B. 3/36C. 4/36D. 5/36
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Chapter 9 / Exercise 39
Precalculus
Hostetler/Larson Expert Verified
For questions 14-17use the following:At De Anza College, a sample of 12 students were asked how many pairs of jeans they own. The results are in the table below:Number of pairs of jeansFrequency213142538110215120114. The sample mean and sample standard deviation are:
15. A histogram of these data would be:
16. The interquartile range for these data is:
17. Find the 40th Percentile.A. 4B. 5C. 3.2D. 4.8
For questions 18-21, use the following: A family doctor is interested in the average number of hours per week her patients spend exercising. 18. The population is:
19. Let X = the number of hours per week one of her patients spends exercising. X is a:
20. The family doctor surveys 20 of her patients. She finds that the average number of hours per week these 20 patients spend exercising is 2.8. The value 2.8 hours is:
21. To do this survey, she asked the first 20 patients who came into her office on Tuesday. This type of sampling isA. StratifiedB. ClusterC. ConvenienceD. Simple Random
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