A coffee manufacturer isinterestedin whether the 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 1.27 cups per day and 1.42 cups per day for those drinking decaffeinated coffee. A random sample of 51 regular-coffee drinkers showed a mean of 4.28 cups per day. A sample of 47 decaffeinated-coffee drinkers showed a mean of 5.50 cups per day.

Use the .01 significance level.

1.	This is a(Click to select)twoone-tailed test.

2.	The decision rule is to rejectH0:rdifz<.(Negative amount should be indicated by a minus sign. Round youranswerto 2 decimal places.)

3.	The test statistic isz=.(Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

4.	What is your decision regardingH0?
	(Click to select)Rejected.Do not rejected.

5.	Thep-value is.