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The table below summarizes the coffee prices of 2 shops. Shop 1 and Shop 2. (We will assume equal variances) -mean- Shop 1 Shop

The table below summarizes the coffee prices of 2 shops. Shop 1 and Shop 2. (We will assume equal variances) -mean- Shop 1 Shop 2 5.75 4.25 -standard deviation- -n- 2.31 7 1.89 9 When calculating a 95% confidence interval for the true mean price difference between shop 1 and shop 2 What is the Critical Value used? round to 3 d.p. A/

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