Suppose a test procedure about the population mean $\mu$ is performed, when the population is normal with known standard deviation $\sigma ,$ then if the alternative hypothesis is $H _ { \pm } : \mu

Name: Suppose a test procedure about the population mean $\mu$ is performed, when the population is normal with known standard deviation $\sigma ,$ then if the alternative hypothesis is $H _ { \pm } : \mu < \mu _ { o }$ the rejection region for a level $\alpha$ test is __________.
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Question

Suppose a test procedure about the population mean $\mu$ is performed, when the population is normal with known standard deviation $\sigma ,$ then if the alternative hypothesis is $H _ { \pm } : \mu < \mu _ { o }$ the rejection region for a level $\alpha$ test is __________.

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The Answer is

z \leq - z _ { \alpha }

Suppose a Test Procedure About the Population Mean μ\muμ Is Performed, When the Population Is Normal with Known Standard

Suppose a Test Procedure About the Population Mean $\mu$ Is Performed, When the Population Is Normal with Known Standard