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The time it takes a student to finish a chemistry test is uniformly distributed between 50...

  1. The time it takes a student to finish a chemistry test is uniformly distributed between 50 and 70 minutes.
  1. What is the probability density function for this uniform distribution?
  2. Find the probability that a student will take between 40 and 60 minutes to finish the test.
  3. Find the probability that a student will take no less than 55 minutes to finish the test.
  4. What is the expected amount of time it takes a student to finish the test?
  5. What is the standard deviation for the amount of time it takes a student to finish the test?
math   Statistics-And-Probability   
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