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You are conducting a study to see if an average is significantly different from 0...

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You are conducting a study to see if an average is significantly different from 0 71 Thus you are performing a two tailed test Your sample data produce the test statistic z 1 762 Find the value accurate to 4 decimal places Sigma a the population standard deviation is assumed from a prior study for this distribution Therefore will you use a z test or a t test p value

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