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sample mean of 50 and a population standard deviation sigma of 2.0 from a previous study where n= 45 values, find the z value and
sample mean of 50 and a population standard deviation sigma of 2.0 from a previous study where n= 45 values, find the z value and p value. The data indicates that the population mean for the new Dodge Ram is 26 miles per gallon, but I think it may be lower based on the data. Test the claim that < 26. Please use 0.05 for the alpha.
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