According to an almanac, 70% of adult smokers started smoking before turning 18 years old. (a) Compute the mean and standard deviation of the random variable X, the number of smokers who started smoking before 18 based on a random sample of 100 adults.
(b) Interpret the mean.

Dogs evolved from wolves and have developed adaptations to help them survive in the wild, like powerful sight, hearing, and smell as well as sharp teeth and bodies that make them powerful hunters. Wild dogs live in packs, or groups of dogs, so they can hunt larger animals

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