A randomized comparative experiment tests whether a cholesterol medication lowers the overall blood pressure for male patients. The control group has ten male patients and the treatment group, which receives the medication, has 10 male patients. All patients started with a cholesterol level of 245 mg/dL.


Cholesterol in mg/dL
Control
241
243
242
245
250
248
246
245
242
247
Treatment
230
225
220
218
224
240
232
221
235
224












Did the cholesterol medication lower the cholesterol levels?

No. The treatment group had a higher level of cholesterol overall.

Yes. The treatment group had a lower level of cholesterol overall.

Yes. The control group had a lower level of cholesterol overall.

No. The treatment group had the same level of cholesterol overall.