A random sample of 105 observations produced a sample mean of 32. Find the critical and...
A random sample of 105 observations produced a sample mean of 32. Find the critical and observed values of z for the following test of hypothesis using α=0.1. The population standard deviation is known to be 9 and the population distribution is normal.
H0: μ=28 versus H1: μ>28.
Round your answers to two decimal places.
zcritical =
zobserved =
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