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emelyquintanill emelyquintanill
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6 years ago
Suppose you were interested in determining the average monthly expenditures of college students on DVDs.
 
  How would you define the population for this problem? How would you obtain sample data for this study? Why would you want to ensure that you survey a random sample of college students?

Q. 2

If a sample of size 21 is selected, the value of A for the probability P(t
 
  A) = 0.025 is:
  A) 2.528
  B) 2.086
  C) 2.518
  D) 2.080

Q. 3

What is the value of Cov(X, Y)?
 
  A) -0.825
  B) 0.750
  C) -0.025
  D) 1.625

Q. 4

Which type of distribution would best model the waiting times of the departing flights at JFK international airport?
 
  A) The uniform distribution
  B) The normal distribution
  C) The binomial distribution
  D) The exponential distribution
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GhaidaGhaida
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6 years ago
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6 years ago
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