Determine whether the situation calls for a survey, an observational study, or an experiment.
you want to find out if a new drug can help decrease the symptoms of migraine headaches.
a experiment
b observational study
c survey

b. observational study

Explanation:

Observational studies are commonly used in order to know the effects of a treatment or drug. This study recruits people (the population of interest) to participate and these people are then interviewed and observed on a face-to-face visit. This allows clinical investigation regarding the safety of the new medication, including its side effects and adverse effects. So, this allows the researcher to know the symptoms of the new drug including whether it can reduce migraine to people.

The study also allows the employment of different designs, thereby paving way to a better patient care.

you're missing vital information, add to it so we can solve this problem for you.

step-by-step explanation:

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)