document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=267657>Question 267657</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A manufacturer makes ball bearings that are supposed to have a mean weight of 30 g.  A retailer suspects that the mean weight is not 30 g and wants to verify that the product is meeting specifications.  The mean weight for a random sample of 16 ball bearings is 29.5 g with a standard deviation of 4.1 g.  At the 0.05 significance level, test the claim that the mean is not 30 g.    You may assume the weights are normally distributed. </SPAN>\n" );
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