A random sample of 105 observations produced a sample mean of 33. Find the critical and observed values of z for the following test of hypothesis using $\alpha = 0.02$. The population standard deviation is known to be 8 and the population distribution is normal. $H_0: \mu = 28$ versus $H_1: \mu > 28$. Round your answers to two decimal places. $z_{critical}$ = $z_{observed}$ =
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Step 1: The null hypothesis is $H_0: \mu = 28$ and the alternative hypothesis is $H_1: \mu > 28$. Show more…
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