Question
The average weekly earnings of aproduction worker in 2000 were AUD425425. Suppose a labor researcher wants to test todetermine whether this figure is still accurate
The average weekly earnings of aproduction worker in 2000 were AUD425425. Suppose a labor researcher wants to test todetermine whether this figure is still accurate today.
The researcher randomly selects5858production workers and obtains a representativeearnings statement for one week from each. The resulting sample average is AUD433.8433.8.
Assuming a population standard deviation of AUD32.632.6, and a 5% level of significance,determine whether the mean weekly earnings of a production worker have changed.
Determine the critical value zc and z score value z based on the sample data.
The critical value zc==
The z score value z based on the sample data ==
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