1. Even if is unknown, what is the assumption about the probability distribution of the population...
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1. Even if σ is unknown, what is the assumption about the probability distribution of the population for the measurement being studied?
2. Under what conditions should we use a z test or a t test when testing hypotheses about a population mean?
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Related Book For
Business Statistics For Contemporary Decision Making
ISBN: 9781119577621
3rd Canadian Edition
Authors: Ken Black, Ignacio Castillo
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