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HypTestExam
HypTestExam

... 5. If a variable is measured on a nominal scale, the median should be used. (False, 6. If all the values in the data are multiplied by a constant, the range is multiplied by the same constant. (True, 7. In a symmetric distribution, the values on either side of the center of the distribution are the ...
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File - RBV AP Statistics

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... students of 352 is only 85.77% if the dropout rate is really 4%. B) z = -1.07; P-value = 0.8577. The university should continue with the new programs. There is an 85.77% chance of having 18 or more of 352 students in a random sample be retained if in fact 4% are retained. C) z = -1.07; P-value = 0.1 ...
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Section 1

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Stat help - BrainMass

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Math 151. Rumbos Spring 2008 1 Solutions to Assignment #21 1

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Student's t-test

A t-test is any statistical hypothesis test in which the test statistic follows a Student's t-distribution if the null hypothesis is supported. It can be used to determine if two sets of data are significantly different from each other, and is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known. When the scaling term is unknown and is replaced by an estimate based on the data, the test statistic (under certain conditions) follows a Student's t distribution.
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