9. Two pain relief drugs are being considered. Drug 1 has shown in the past to have a standard deviation = 4 minutes. A random sample of 8 doses of the first drug showed that the average amount of time required before the drug was absorbed into the bloodstream was = 24 minutes. For the second drug, the historical data indicated a standard deviation o, = 3.9 minutes. A random sample of 10 doses showed the average time required for absorption was =29 minutes. Assume the absorption times follow a normal distribution. %3D Should you use the Z-Distribution or T-Dstribution in determining a confidence interval in this problem? Explain. a. Find a 95% confidence interval for the difference in average absorption time for the two drugs. b. Does it appear that one drug is absorbed faster than the other (at the 95% level)? Explain. с.

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Confidence Intervals Assignment (2).rtf
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9. Two pain relief drugs are being considered. Drug 1 has shown in the past to have a
standard deviation o, =4 minutes. A random sample of 8 doses of the first drug
showed that the average amount of time required before the drug was absorbed into the
bloodstream was = 24 minutes.
For the second drug, the historical data indicated a standard deviation o, = 3.9
minutes. A random sample of 10 doses showed the average time required for
absorption was =29 minutes.
Assume the absorption times follow a normal distribution.
Should you use the Z-Distribution or T-Dstributiọn in determining a
confidence interval in this problem? Explain.
a.
Find a 95% confidence interval for the difference in average absorption time
for the two drugs.
b.
Does it appear that one drug is absorbed faster than the other (at the 95%
level)? Explain.
с.
N
25 :
MacBook Air
R.
T.
Y
U
G.
H.
Transcribed Image Text:TextEdit File Edit Format View Window Help Q? 71% D Mo Confidence Intervals Assignment (2).rtf Edited v Times New Roman Regular 12 BIU 9. Two pain relief drugs are being considered. Drug 1 has shown in the past to have a standard deviation o, =4 minutes. A random sample of 8 doses of the first drug showed that the average amount of time required before the drug was absorbed into the bloodstream was = 24 minutes. For the second drug, the historical data indicated a standard deviation o, = 3.9 minutes. A random sample of 10 doses showed the average time required for absorption was =29 minutes. Assume the absorption times follow a normal distribution. Should you use the Z-Distribution or T-Dstributiọn in determining a confidence interval in this problem? Explain. a. Find a 95% confidence interval for the difference in average absorption time for the two drugs. b. Does it appear that one drug is absorbed faster than the other (at the 95% level)? Explain. с. N 25 : MacBook Air R. T. Y U G. H.
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