251FEsummer_2003 - 251 Final Review Test Statistics Mat251...

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251 Final Review Test Instructor: Roy Whalen Statistics Mat251 Final Exam SHOW YOUR WORK!!!! Name: __________________ Problem 1 is worth 20 points. Problems 2 - 9 are each worth 10 points 1. The test grades for twelve students in a certain statistics class are: 87, 60, 72, 98, 99, 59, 67, 94, 92, 89, 93, 100 a] The mode is______ because ________________________________________________ b] The mean is_______ because_________________________________________________ c] The std. dev. is _____ (show the formula you used) d] The median is ______ because _______________________________________________ e] The range is _______ because ________________________________________________ f] The variance is ______ because________________________________________________ g] The 35 th percentile is _____ because____________________________________________ 2. Forty percent of law students who sit for a bar exam pass it the first time. From the binomial probability distribution table, the probability that in a random sample of 12 law students who will sit for the bar exam, at most five will pass it the first time is _________because: ____________________________________ Hint: Use the binomial probabilities table, Table A-1
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251FEsummer_2003 - 251 Final Review Test Statistics Mat251...

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