Consider the following test performed with the level of significance 0.01: H0: ? = 23.5 HA: ? > 23.5 A random sample of size 47 is obtained from a normally distributed population. The population standard deviation is equal to 4.2. The sample mean happened to be 22.6. For this hypothesis test, what will be the critical value (the relevant z-alpha)? Round the answer to three decimal places.
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The null hypothesis is Ho: u=23.5 and the alternative hypothesis is HA: u>23. Show more…
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