The Excellent Drug Company claims its aspirin tablets will relieve headaches faster than any oth aspirin on the market. To determine whether Excellent's claim is valid, 30 volunteers who are suf from headaches are randomly assigned to two groups. The subjects in one group are given Exce aspirin, and the subjects in the other group are given aspirin from the Simple Drug company. The number of minutes required for each subject to recover from the headache is recorded. A test is performed using a 0.05 to determine whether Excellent's aspirin cures headaches significantly: than Simple's aspirin. The data were analyzed with MINITAB, and the following output was obtair StDev SE Mean Mean Excellent 15 8.4 4.23 1.092 Simple 15 8.9 4.61 1.190 Difference = mu(Excellent) - mu(Simple) Estimate for difference: -0.5 T-Test of difference = 0 (vs not =): T-Value -0.380 P-Value = 0.3796 DF = 27.8 If the company performing this test committed a Type Il error, which of the following describes wha happened? The company hasn't concluded that Excellent aspirin works faster than Simple aspirin when it does. O The company failed to reject Ho when the P-value was less than a. O The company concluded that Excellent aspirin works faster than Simple aspirin when it does. OThe company rejected Ho when the P-value was greater than e. O The company concluded that Excellent aspirin works faster than Simple aspirin when it doesn't.

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Chapter11: Data Analysis And Probability
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The Excellent Drug Company claims its aspirin tablets will relieve headaches faster than any othe
aspirin on the market. To determine whether Excellent's claim is valid, 30 volunteers who are suff
from headaches are randomly assigned to two groups. The subjects in one group are given Excell
aspirin, and the subjects in the other group are given aspirin from the Simple Drug company. The
number of minutes required for each subject to recover from the headache is recorded. A test is
performed using a 0.05 to determine whether Excellent's aspirin cures headaches significantly fa
than Simple's aspirin. The data were analyzed with MINITAB, and the following output was obtain
Mean
StDev
SE Mean
Excellent
15
8.4
4.23
1.092
Simple
15
8.9
4.61
1.190
Difference = mu(Excellent) - mu(Simple)
%3D
Estimate for difference: -0,5
T-Test of difference 0 (vs not =): T-Value -0.380 P-Value = 0.3796 DF = 27.8
If the company performing this test committed a Type Il error, which of the following describes what
happened?
O The company hasn't concluded that Excellent aspirin works faster than Simple aspirin when it does.
O The company failed to reject Ho when the P-value was less than a.
O The company concluded that Excellent aspirin works faster than Simple aspirin when it does.
OThe company rejected Ho when the P-value was greater than e.
The company concluded that Excellent aspirin works faster than Simple aspirin when it doesn't.
Transcribed Image Text:The Excellent Drug Company claims its aspirin tablets will relieve headaches faster than any othe aspirin on the market. To determine whether Excellent's claim is valid, 30 volunteers who are suff from headaches are randomly assigned to two groups. The subjects in one group are given Excell aspirin, and the subjects in the other group are given aspirin from the Simple Drug company. The number of minutes required for each subject to recover from the headache is recorded. A test is performed using a 0.05 to determine whether Excellent's aspirin cures headaches significantly fa than Simple's aspirin. The data were analyzed with MINITAB, and the following output was obtain Mean StDev SE Mean Excellent 15 8.4 4.23 1.092 Simple 15 8.9 4.61 1.190 Difference = mu(Excellent) - mu(Simple) %3D Estimate for difference: -0,5 T-Test of difference 0 (vs not =): T-Value -0.380 P-Value = 0.3796 DF = 27.8 If the company performing this test committed a Type Il error, which of the following describes what happened? O The company hasn't concluded that Excellent aspirin works faster than Simple aspirin when it does. O The company failed to reject Ho when the P-value was less than a. O The company concluded that Excellent aspirin works faster than Simple aspirin when it does. OThe company rejected Ho when the P-value was greater than e. The company concluded that Excellent aspirin works faster than Simple aspirin when it doesn't.
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