Question 553577
A typical college student drinks an average of 96 ounces per day of various beverages that contain caffeine. A sample of 12 students at Wallace College revealed the following amounts of beverages consumed containing caffeine:
108 96 84 84 120 96 108 132 72 120 72 96 
Can we conclude that the average amount of beverages consumed containing caffeine at Ownes College is the same as the typical college student? Use the hypothesis testing procedure.
a. State the null and alternate hypotheses.
H0: u = 96 
H1: u # 96
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b. State the decision rule.
Reject Ho is the test statistic is < -1.96 or > +1.96.
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Compute the mean and standard deviation. 
x-bar = 99
std = 19.23
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e. Compute the value of the test statistic. 
t(99) = (99-96)/[19.23/sqrt(12)] = 0.5404
f. Formulate the decision rule.
Since the test statistic is not in either reject interval
fail to reject Ho.
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Cheers,
Stan H.
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