Question

In: Statistics and Probability

1.) Using excel. A random number generator picks a number from one to nine in a...

1.) Using excel. A random number generator picks a number from one to nine in a uniform manner.

  1. X ~ _________
  2. Graph the probability distribution.
  3. f(x) = _________
  4. μ = _________
  5. σ = _________
  6. P(3.5 < x < 7.25) = _________
  7. P(x > 5.67)
  8. P(x > 5|x > 3) = _________
  9. Find the 90th percentile.

2) using excel A subway train on the Red Line arrives every eight minutes during rush hour. We are interested in the length of time a commuter must wait for a train to arrive. The time follows a uniform distribution.

  1. Define the random variable. X = _______
  2. X ~ _______
  3. f(x) = _______
  4. μ = _______
  5. σ = _______
  6. Find the probability that the commuter waits less than one minute.
  7. Find the probability that the commuter waits between three and four minutes.

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