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MTH126 Applied Statistics Final Exam

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1MTH126Applied Statistics Final ExamMTH126–Applied StatisticsFinal Exam–February 22, 2013~ Please show your work ~Name_________________________________________________________________________In the box to the right, enter ‘T’ for ‘True or ‘F’ for False for each of the following questions(1 point each)1One-tailed tests reflect a non-directional hypothesis.F2The expected value isalsoreferred to as the‘long-term’average or mean.T3The test statistic for anychi-squaretest is alwayslessthan or equal to zero.F4The f-distribution, like the normal distribution is symmetrical.F5The mean,median, and mode typically differ substantially innormally distributed data.F6If two variables are significantly correlated, we can conclude that one variable causes the change in the other variable.F7A normal distribution exists for everycombination of mean and standard deviationT8A correlation of-.9 is stronger than a correlation of .1T9If the value for one variable goes down when the value for another variable goes up, these variables are said to be negativelycorrelated.T10The mode is highly sensitive to outliers or extreme results.F11In an ANOVA test, the null hypothesis states that at least two of the group means are not equal.F12The mathematical tool used to study randomness is calledprobability.T13Mutually exclusiveeventscannot occur at the same time.T14The coefficient of determinationrepresents the percent of variation inythat is NOT explained byvariation inxusing the regression lineF

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Document Details

University
Calhoun Community College
Course
MTH 126
Subject
Statistics

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