Which type of study best describes the following research most likely to be done?
a researcher is testing new weight loss supplements. the researcher decides to sample two groups. the first
group of subjects, the researcher labeled group 'a: the researcher plans to give a placebo that looks like the
real medicine but is just a sugar pill to group 'a: the second group, group 'b', will be given the real medicine.
the researcher knows which participants got the placebo and which received treatment but the participants
don't know.
blind study
o double blind study
© open study
closed study

Blind Study

Step-by-step explanation:

The answer is blind study because in a double blind study neither the subjects or the researchers know the control group. in an open study everyone knows who is in the control group.

Blind Study

Step-by-step explanation:

Blinded study: A study done in such a way that the patients or subjects do not know (is blinded as to) what treatment they are receiving to ensure that the results are not affected by a placebo effect

(Hope I Helped!)

14

step-by-step explanation:

14 x 3 = 42

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.