Question

The number of seconds XX after the minute that class ends is uniformly distributed between 0 and 60. Round all answers to 4 decimal places where possible.

  1. What is the distribution of XX? XX ~ U(Correct,Correct)  then the sampling distribution is
  2. Suppose that 35 classes are clocked.  What is the distribution of ¯xx¯ for this group of classes? ¯xx¯~ N(,)
  3. What is the probability that the average of 35 classes will end with the second hand between 22 and 28 seconds?

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