To compare the price of a certain commodity in two cities, ten shops were selected at random in each city. The prices found are given below. City A 61 60 56 63 56 63 59 56 44 61 City B 55 54 47 69 51 61 57 54 62 58 Test whether the average price can be said to be the same in two cities?

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A: Regression analysis

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A: Givenx=245n=321p^=xn=245321≅0.7632confidence interval=90%

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