The buyer of shirts for a department store wants to test whether shirts with sleeve labels...
The buyer of shirts for a department store wants to test whether shirts with sleeve labels of 33 inches really are 33 inches on average. A random sample of 100 from 10,000 incoming shirts is taken. The sample shows a mean length of 33.1 inches and a standard deviation of 0.2 inches. The buyer wants to see if there is sufficient evidence that the mean sleeve length significantly differs from 33 inches?
Use α = 0.05.
Set up the correct null and alternative hypothesis.
Group of answer choices
Ho: Mu = 33 Ha: Mu > 33
Ho: Xbar = 33 Ha: Xbar > 33
Ho: Mu = 33 Ha: Mu < 33
Ho: Mu = 33 Ha: Mu ≠33
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