A Coffee Manufacturer Is Interested In Whether The Mean Daily Consumption Of Regular Coffee Drinkers Is Less Than That O 1 (26.67 KiB) Viewed 36 times
A Coffee Manufacturer Is Interested In Whether The Mean Daily Consumption Of Regular Coffee Drinkers Is Less Than That O 2 (12.23 KiB) Viewed 36 times
A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. Assume the population standard deviation is 1.50 cups per day for those drinking regular coffee and 1.66 cups per day for those drinking decaffeinated coffee. A random sample of 53 regular-coffee drinkers showed a mean of 4.36 cups per day. A sample of 43 decaffeinated-coffee drinkers showed a mean of 5.85 cups per day. Use the 0.010 significance level a. State the null and alternate hypotheses. O Ho: Regular Decaf. My Regular Decal OHO: Hregular<HDecaf. Hy Regular Decat O HO HRegular<HDecaf. Hy wRegular 2 Decal b. Compute the test statistic. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Test static
c. Compute the p-value. The p value is d. What is your decision regarding the null hypothesis? Reject He O Do not reject Hi
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