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Question 17: Given the following frequency table: Rating: 0    1 2 3 4 5 6...

Question 17:

Given the following frequency table:
Rating: 0    1 2 3 4 5 6 7 8
Frequency: 69 17 6 3 1 2 1 0 1

What fraction of the x values fall within three standard deviations of the mean?

Please enter answer in terms of a decimal. (e.g. 0.1, 0.04, 0.85)

Question 24: A group of forty people at a health club were classified according to their gender and smoking habits, as shown below: Smoking Habits Gender Smoker (S) Nonsmoker (N) Total Male (M) 2 24 26 Female (F) 6 8 14 Total 8 32 40 One person is selected at random from that group of forty people. If the person was male, what is the probability he smokes?

a. 0.5174 b. 0.8254 c. 0.0769 d. 0.6885

math   Statistics-And-Probability   
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