If the company performing this test committed a Type II error, which of the following describes what happened?

The Excellent Drug Company claims its aspirin tablets will relieve headaches faster than any other aspirin on the market. To determine whether Excellent's claim is valid, 30 volunteers who are suffering from headaches are randomly assigned to two groups. The subjects in one group are given Excellent's 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 5% significance level test is performed to determine whether Excellent's aspirin cures headaches significantly faster than Simple's aspirin. The data were analyzed with MINITAB, and the following output was obtained: N 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) Estimate for difference: -0.5 T-Test of difference - 0 (vs not -) : T-Value - -0.380 P-Value - 0.3796 DF - 27.8