To compare the effect of weather on sales of soft drinks, a soda manufacturer sampled two regions of the country with the following results. Is there a difference in sales between the 2 regions? Using...

To compare the effect of weather on sales of soft drinks, a soda manufacturer sampled two regions of the country with the following results. Is there a difference in sales between the 2 regions? Using the 1% level of significance, what is the critical value?


_____________Region A______Region B
Sample Size____1000__________1500
Sales__________400___________500

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