Solution-Mean daily consumption of regular-coffee drinkers

Mean daily consumption of regular-coffee drinkers

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Reference no: EM131361113

A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. A random sample of 50 regular-coffee drinkers showed a mean of 4.35 cups per day, with a standard deviation of 1.2 cups per day. A sample of 40 decaffeinated coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. What is your computed z-statistic?

Reference no: EM131361113

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Mean daily consumption of regular-coffee drinkers : A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers.

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Mean daily consumption of regular-coffee drinkers

Reference no: EM131361113

Reference no: EM131361113

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