Advanced Placement (AP), 31.03.2021 18:50 kikieet

The company claims that the mineral supplement can effectively prevent the common cold. A scientist disputes the claim, saying an error exists in the setup of the groups for the investigation.
Which change to the investigation would remove the source of this error?
OA. Test a fourth group, in which participants do not receive the mineral supplement
OB. Test all three groups, with each participant receiving the mineral supplement for 12 months.
OC. Test only one group, with each participant receiving 200 mg/day of the mineral supplement.
OD Test only two groups, one with each participant receiving 200 mg/day and one with 50 mg/day of the mineral supplement.

Answers: 3

Show answers

Other questions on the subject: Advanced Placement (AP)

Advanced Placement (AP), 23.06.2019 13:20, vane8229

Giving free brainliest + free points if answered correctly ! rural areas have of development. a. heavy signs b. no signs c. one type d. different types

Answers: 2

continue

Advanced Placement (AP), 25.06.2019 18:00, taylorannsalazar

Anew moon would be directly overhead at what time

Answers: 2

continue

Advanced Placement (AP), 25.06.2019 19:30, Farhan54019

Ben can’t wrestle in this week’s match unless he loses two pounds. he decides to take a nap instead of exercising. this is an example of wasting time getting distracted allowing others to set goals

Answers: 1

continue

Advanced Placement (AP), 27.06.2019 02:50, haileybug0305

There was an overuse of fertilizers in william's farm. this led to the destruction of the crops, and william incurred huge losses. which management function was neglected in this process?

Answers: 2

continue

You know the right answer?

The company claims that the mineral supplement can effectively prevent the common cold. A scientist...