Question
In: Statistics and Probability
A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less...
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 for those drinking regular coffee is 1.29 cups per day and 1.44 cups per day for those drinking decaffeinated coffee. A random sample of 55 regular-coffee drinkers showed a mean of 4.41 cups per day. A sample of 47 decaffeinated-coffee drinkers showed a mean of 5.16 cups per day.
Use the 0.01 significance level.
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Is this a one-tailed or a two-tailed test?
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One-tailed test.
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Two-tailed test.
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State the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
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Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
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What is the p-value?
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What is your decision regarding H0?
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Reject H0.
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Do not reject H0.
Solutions
orchestra answered 1 year agoRelated Solutions
A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less...
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 for those drinking regular coffee is 1.45 cups per day
and 1.59 cups per day for those drinking decaffeinated coffee. A
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A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less...
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consumption of regular-coffee drinkers is less than that of
decaffeinated-coffee drinkers. Assume the population standard
deviation for those drinking regular coffee is 1.36 cups per day
and 1.49 cups per day for those drinking decaffeinated coffee. A
random sample of 46 regular-coffee drinkers showed a mean of 4.50
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A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less...
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deviation for those drinking regular coffee is 1.39 cups per day
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A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less...
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deviation for those drinking regular coffee is 1.21 cups per day
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A coffee manufacturer is interested in whether the mean daily consumption of regular- coffee drinkers is...
A coffee manufacturer is interested in whether the mean daily
consumption of regular- coffee drinkers is less than that of
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