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Number of degree of freedom

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A supermarket is interested in finding out wheather the mean weekly sales volume of Coca-Cola are the same when the softdrinks are displayed on the top shelf and when they are displayed on the bottom shelf. Ten stores are randomly selected from the supermaket chain with 5 stores using the top shelf display and 5 stores using the bottom shelf display. Assume that the samples are normally distributed with equal population variances. Refere to the sales volume data in the table below, what is the number of degree of freedom? Top Shelf Sales Volume 23 35 50 68 32 Bottom Shelf Sales Volume 55 70 72 51 63

Reference no: EM13944377

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