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## Statistics

To test the given claim using two mean z test.

A coffee manufacturer is interested in whether mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. Assume the population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee. A random sample of 50 regular-coffee drinkers showed a mean of 4.35 cups per day. A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day. Use the .01 significance level. find out the p-value.

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M918411

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