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Find the proportion of students who will finish the exam

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Reference no: EM132015770

The lengths of time taken by students on an algebra proficiency exam (if not forced to stop before completing it) are normally distributed with mean 28 minutes and standard deviation 1.5 minutes.

  1. Find the proportion of students who will finish the exam if a 30-minute time limit is set.
  2. Six students are taking the exam today. Find the probability that all six will finish the exam within the 30-minute limit, assuming that times taken by students are independent. Hint: There is a binomial random variable here, whose value of p comes from part (a).

Reference no: EM132015770

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