The prices of 100 common products was recorded from two major supermarkets (Market A and Market B).It was observed that out of the 100 products,51 products were more expensive at Market A,34 products were more expensive at Market B,and 15 products were the same price.Is the median difference in price between items at these supermarkets different from 0? Carry out a Sign Test.Use a significance level of 0.05.
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