A medical researcher designs a study that will investigate the effects of a new drug on lowering patient's cholesterol level. The researcher randomly
selects participants for two groups. One group is given the new drug and the
other group is given a placebo. Any person, within driving distance of the
hospital, is allowed to participate and will be given a monetary compensation.
Each sample consists of 5 patients. Select all weaknesses in the design.

Step-by-step explanation:

i can you with this question sweetie!

step-by-step explanation:

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.