20 May HW DUE IN TWO HOURS
Fifty-five percent of the students applying to a university are accepted. Using the binomial probability tables or Excel, what is the probability that among the next 18 applicants:
- Exactly 6 will be accepted?
- At least 10 will be accepted?
- Exactly 5 will be rejected?
- Fifteen or more will be accepted?
- Determine the expected number of acceptances.
- Compute the standard deviation.- Make sure you have looked at page 245.
Question 2
Scores on a recent national statistics exam were normally distributed with a mean of 82 and a standard deviation of 4.
- What is the probability that a randomly selected exam will have a score of at least 87?
- What percentage of exams will have scores between 80 and 85?
- If the top 3% of test scores receive merit awards, what is the lowest score eligible for an award?
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