Medicine a is an effective treatment for the common cold a study was conducted to test the effectiveness of medicine a which question would determining whether the conclusion above is valid

B.) How many people were included in the study?

This is the best answer, as the more people there is, a greater variety of choices is possible, leading to a better result that can usually apply to a larger population.

hope this helps

the device is called “ rocket engine”

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered