A manufacturing process for a measurable quantity is to have variance of 5 units. From a random sample of 16 units the sample variance was found to be 7.2. Do you have any reason to believe that the
variance has increased.
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Once the data are entered, most computers will return the sample median at ... (b) The estimate for a female is 89/(89 + 16) = 0.85. ... The data vector had mean 7.96 and variance 1.9.
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