StatTutor Lesson - Binomial Distributions in Statistical Sampling

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      Questions 1-2

      61

      Question 1.

      We are told that 37% of students at a large university are minorities. If a student from this university is randomly picked, what is the probability he or she is not a minority?
      Correct. If 37% are minorities, 100% – 37% = 63% are not minorities. Because we are selecting one student at random, the probability of selecting a non-minority is 63%, or 0.63.
      Incorrect. If 37% are minorities, 100% – 37% = 63% are not minorities. Because we are selecting one student at random, the probability of selecting a non-minority is 63%, or 0.63.
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      Questions 3-4

      213

      Question 3.

      Is the number of red M&M’s when four candies are drawn from a fun-size package approximately binomial?

      		A.
      		B.
      		C.
      		D.
      Correct. Fun size bags are small. Drawing four from the bag will noticeably change what remains. This is the same situation as taking a handful from a small bowl in your kitchen.
      Incorrect. Fun size bags are small. Drawing four from the bag will noticeably change what remains. This is the same situation as taking a handful from a small bowl in your kitchen.
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