Statistics Quiz

1)      The heights of adult males are known to be normally distributed with a mean of 709 inches and a standard deviation of 2 inches.


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  1. a) Find the probability that a randomly selected adult male will be taller than 75 inches?
  1. b) If three adult males are picked at random fin the probability that at lead one of the males is taller than 75 inches.

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2)      Suppose a fair coin is tossed 36 times.

  1. A) What is the (approximate) probability of getting at most 20 heads.

 

  1. B) What is the probability of getting exactly 18 heads?

 


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