Let x be the number of students that attend graduation as


Suppose that 90% of graduating students attend their graduation. A group of 30 graduating students is randomly chosen. Let X be the number of students that attend graduation. As we know, the distribution of X is a binomial probability distribution.  

  • What are the number of trials (n)?
  • What is the probability of successes (p)?
  • What is the probability of failures (q)?
  • How many students are expected to attend graduation?
  • What is the probability that exactly 25 students attend graduation?

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Business Management: Let x be the number of students that attend graduation as
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