According to a study, 80 % of adult smokers started smoking before 21 years old. 10 smokers 21 years old or older are randomly selected, and the number of smokers who started smoking before 21 is recorded. 1. The probability that at least 6 of them started smoking before 21 years of age is  Show your work below:   2. The probability that at most 7 of them started smoking before 21 years of age is  Show your work below:   3. The probability that exactly 9 of them started smoking before 21 years of age is  Show your work below:

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A: Correct answer is 0.0371

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A:

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A: a.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.