Question: Given the sample mean of (x bar) 80, standard deviation () = 4.4, and the previous study showing n=40 values. Find the Z and P

Given the sample mean of (x bar) 80, standard deviation () = 4.4, and the previous study showing n=40 values. Find the Z and P values. The data indicates the population () is for the average time a tractor plow unit actively plowing a wildland fire being 54 minutes, however we believe it to be less than that. Test the claim that < 54.

Your alpha will be .05.

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