Hipothesis testing
Question Description
The mean retail price of agriculture books in 2005 was $57.61. Thisyear’s retail mean price for 28 randomly selected agriculture books was$54.97. Assume that the population standard deviation of prices for thisyear’s agriculture books is $8.45.
a) At the 5% significance level, do the data provide sufficientevidence to conclude that this year’s mean retail price of agriculturebooks has changed from the 2005 mean?
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