Identifying Confounding Variables Ty
C C
A vitamin company wants to evaluate whether its vitamins Which of the following could be a potential confounding
help to improve student energy levels. To conduct the variable in the experiment? Select all that apply
experiment, the company randomly selects 100 college
students and instructs them to eat healthy, have a full
The vitamin
nights sleep, and take one vitamin each day for 6
The vitamin company
months. Results showed an association between taking
the vitamin and energy levels.
Sleep patterns
Time spent exercising
Time spent studying
Quality of diet
Class attendance

283 square feet

step-by-step explanation:

good luck

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm