Brainliest for best answer! please help You are interested in the extent to which taking Vitamin C in high
doses (1000mg per day) prevents the catching of a cold. You have 300 volunteers to participate in your study. You know that you need to have a control group that will receive no treatment.

a) Identify the treatment.

b) Either in paragraph form or in diagram form, design the experiment to answer your question. Be sure to include the element of randomization in your design.

a) the treatment is to see if Vitamin C in high doses will help prevent catching colds .

b) you could have 150 people take the Vitamin C in high doses, and have 150 people not take the Vitamin C in high doses, and see if the Vitamin C does in fact help the prevention of catching a cold.

Step-by-step explanation:

except a rational number. : )

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6