One1 - One-Sample z-test...

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One-Sample z -test Requirements : Normally distributed population,   known  σ Test for population mean   Hypothesis test   Formula where  is the sample mean, Δ is a specified value to be tested,   is the population standard σ   deviation, and  n  is the size of the sample. Look up the significance level of the  z- value in the  standard normal table (Table in Appendix ).  A herd of 1,500 steer was fed a special high-protein grain for a month. A random sample of 29 were 
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