Author Question: After reading the paragraph below, answer the questions that follow.Researchers set up a study to ... (Read 247 times)

WWatsford · **on:** Jul 15, 2019

After reading the paragraph below, answer the questions that follow.

Researchers set up a study to determine whether large doses of a nutritional supplement would shorten the length of time it takes to recover from a cold. Three thousand volunteers were split into two groups. For two weeks, members of group A took 3,000 mg of the supplement daily. Group B received 3,000 mg of a placebo (sugar pill). At the end of the two-week period, the researchers inserted live cold viruses directly into the noses of all the volunteers. The volunteers in both group A and group B continued to take their daily pills. All the volunteers got colds, and there was no significant difference in the length of time the colds lasted.

Which was the experimental group?
◦ group A only
◦ group B only
◦ all 3,000 volunteers

skipfourms123 · **Reply #1 on:** Jul 15, 2019

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