A random sample of 127 observations produced a sample mean of 32. Find the critical and observed values of z for the following test of hypothesis using α = 0.01. The population standard deviation is known to be 8 and the population distribution is normal. Ho: μ = 28 versus H₁ μ # 28. Round your answers to two decimal places. Zcritical left Zcritical right Zobserved

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A random sample of 127 observations produced a sample mean of 32. Find the critical and observed values of z for the following test of
hypothesis using α = 0.01. The population standard deviation is known to be 8 and the population distribution is normal.
Ho: μ
=
28 versus H₁ μ # 28.
Round your answers to two decimal places.
Zcritical left
Zcritical right
Zobserved
Transcribed Image Text:A random sample of 127 observations produced a sample mean of 32. Find the critical and observed values of z for the following test of hypothesis using α = 0.01. The population standard deviation is known to be 8 and the population distribution is normal. Ho: μ = 28 versus H₁ μ # 28. Round your answers to two decimal places. Zcritical left Zcritical right Zobserved
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