Is there a difference in mean daily consumption of coffee between males and females? A random sample of 40 males consumed an average of 2.3 cups per day with a standard deviation of 1.2 cups per day....

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Extracted text: Is there a difference in mean daily consumption of coffee between males and females? A random sample of 40 males consumed an average of 2.3 cups per day with a standard deviation of 1.2 cups per day. A random sample of 50 females consumed an average of 3 cups per day with a standard deviation of 2 cups per day. The population variances are not known but assumed to be equal for both males and females. What is the best estimate of the unknown population variance of daily coffee consumption? Round your answer to THREE decimal places.