Mathematics, 20.09.2020 01:01 mattmaddox86

Does reducing screen brightness increase battery life in laptop computers? To find out, researchers obtained 30 new laptops of the same brand. They chose 15 of the computers at random and adjusted their screens to the brightest setting. The other 15 laptop screens were left at the default setting - moderate brightness. Researchers then measured how long each machine's battery lasted. Was this an observational study or just an experiment? Justify your answer.

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:00, SavyBreyer

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Answers: 1

continue

Mathematics, 21.06.2019 19:00, Maya629277

Zroms according to the synthetic division below, which of the following statements are true? check all that apply. 352 -2 6 -12 12 2 4 0 i a. (x-3) is a factor of 2x2 - 2x - 12. b. the number 3 is a root of f(x) = 2x2 - 2x - 12. c. (2x2 - 2x - 12) = (x + 3) = (2x + 4) d. (2x2 - 2x-12) - (x-3) = (2x + 4) e. (x+3) is a factor of 2x2 - 2x - 12. o f. the number -3 is a root of fx) = 2x2 - 2x - 12. previous

Answers: 2

continue

Mathematics, 21.06.2019 20:30, aaronw3743

Wrote and expression for the difference of p and 4

Answers: 1

continue

Mathematics, 21.06.2019 20:30, tatipop49

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

Answers: 2

continue

You know the right answer?

Does reducing screen brightness increase battery life in laptop computers? To find out, researchers...