A new test was designed to have a mean of 80 and a standard

A new test was designed to have a mean of 80 and a standard

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A new test was designed to have a mean of 80 and a standard deviation of 10. A random sample of 20 students at your school take the test and the mean score turns out to be 85. Does the score differ significantly from 80?

Reference no: EM13614673

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