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i Chrome File Edit View History Bookmarks People Window Help 53% (D. , Tue 9:45 PM Do Homework - Natalie Serna Secure | https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkId-46681 7798&questionld-8;&flushed-false;&cld-4862594;&centervins; STAT 301 010 TR 200 315 S18 Kuhn Natalie Serna | 2/20/18 9:45 PM Homework: Homework 6 (80% required) Save Score: 0 of 1 pt 27 of 40 (31 complete) HW Score: 66.33%, 26.53 of 40 pts 6.2.43 Question Help According to an almanac, 70% of adult smokers started smoking before turning 18 years old. When technology is used, use the Tech Help button for further assistance (a) Compute the mean and standard deviation of the random variable X, the number of smokers who started before 18 in 100 trials of the probability experiment. (b) Interpret the mean. (c) Would it be unusual to observe 80 smokers who started smoking before turning 18 years old in a random sample of 100 adult smokers? Why? 309 1002 Enter your answer in the answer box and then click Check Answer 201 Clear All Check Answer remaining

Explanation / Answer

a) Solution would be

Mean = 100*0.70 = 70

We expect 70 smokers in 100 trials of experiment

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