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Natasha2012 [34]
2 years ago
5

Which of the following is a technique to improve internal validity

SAT
1 answer:
3241004551 [841]2 years ago
4 0

The technique to improve internal validity is D) Addition of a control group.

<h3>What is internal validity?</h3>

Internal validity  serves as the  study  which bring about the establishment of a trustworthy cause-and-effect relationship  that can be found in treatment and an outcome.

it should be noted that  Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.

Learn more about internal validity on:

brainly.com/question/968894

#SPJ1

COMPLETE QUESTOIN:

Which of the following is a technique to improve internal validity ____________?

A) Experimenter expectancy

B) Participant bias

C) Use of a confederate

D) Addition of a control group

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6 0
1 year ago
~A certain rectangular prism has a height of h inches, a width that is 3 inches less than its height, and a length that is 4 inc
3241004551 [841]

Answer:

Volume = 480 cubic inches

Explanation:

We have the following relationships to work with

width w = h -3

length l = h + 4

area of base of prism a = l x w = 60  (1)

area of base in terms of h = (h-3)(h+4) =h² -3h + 4h -12 (2)

Setting (1) = (2) gives

h² + h -12 =60

h² + h -72 = 0

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Since h cannot be negative, h = 8 inches

Volume = base area x h = 60 x 8 = 480 cubic inches

<u>Note</u>

We do not have to calculate length and width separately, but if so,

w = 8 -3 = 5

l = 8 + 4 = 12

3 0
2 years ago
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