A random sample of 134 observations produced a sample mean of 31. Find the critical and...

A random sample of 134 observations produced a sample mean of 31. 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 8 and the population distribution is normal.

H0: μ=28 versus H1: μ>28.

Round your answers to two decimal places.

z_critical =

z_observed =

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orchestra answered 1 year ago

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