anonymous
  • anonymous
hey guys i posted the question as a reply :)
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Continuous uniform distribution? Many students find that sitting through an entire lecture is difficult to do without falling asleep. Suppose the number of minutes a single, randomly selected student is asleep during a lecture is uniformly distributed between 7 and 14 minutes. (A) What is the probability that a student sleeps between 10 and 14 minutes during a lecture? (B) Over the course of the semester (say, 50 lectures), what is the probability that a randomly selected student will sleep a total of between 130 and 140 minutes? Assume that the minutes slept in any lecture is independent of the number of minutes slept in any other lectures. (C) How many lectures must a student attend to be 95% sure that they will have slept at least 28 minutes in total? Use the quadratic equation to solve for the quadratic in question (C). Hint: replace x with sqrt(n) to solve for n.
anonymous
  • anonymous
A) 400/7 percent
anonymous
  • anonymous
y is that?

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anonymous
  • anonymous
14-7 is range, 7 / 7 = 1. 100% apply same range method to 14-10 with 7
anonymous
  • anonymous
i think theres a formula or something thought
anonymous
  • anonymous
there is, you can use that too
anonymous
  • anonymous
how do u use it lol?
anonymous
  • anonymous
the answer for A) 0.57
anonymous
  • anonymous
what would be B) and C) ??

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