Professor Elderman has given the same multiple-choice final exam in his Principles of Microeconomics class for...
Professor Elderman has given the same multiple-choice final exam in his Principles of Microeconomics class for many years. After examining his records from the past 10 years, he finds that the scores have a mean of 76 and a standard deviation of 12.
What is the probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam?
Homework Answers
0.9738 probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam.
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Professor Elderman has given the same multiple-choice final exam
in his Principles of Microeconomics class for...
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A professor of statistics noticed that the marks in his course are normally distributed. He also noticed that his morning classes average 75% with a standard deviation of 13% on their final exams. His afternoon classes average 76% with a standard deviation of 12%. A. What is the probability that a randomly selected student in the morning class has a higher final exam mark than a randomly selected student from an afternoon class? Probability = .4761 B. What is the...
The professor of a
introductory calculus class has stated that, historically, the
distribution of final exam grades in the course resemble a Normal
distribution with a mean final exam mark of μ=63μ=63% and a
standard deviation of σ=9σ=9%.
If using/finding zz-values, use three decimals.
(a) What is the probability that a random chosen
final exam mark in this course will be at least 73%? Answer to four
decimals.
(b) In order to pass this course, a student must
have a...
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