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.
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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
Actually they just said it is 4 years at the maxinmum
The number of protons in an element is the atomic number of the element, and it is not affected by the charge on the element. Hence, the species which has similar Number of proton is Fe²⁺
To know the species which the same number of protons as Fe³⁺, we need to obtain the <em>atomic number of the elements on the periodic table</em> :
- Fe³⁺, Atomic number = 26; Number of protons = 26
- Mn³⁺, Atomic number = 25; Number of protons = 25
- Co²⁺, Atomic number = 27; Number of protons = 27
- Fe²⁺, Atomic number = 26; Number of protons = 26
- Ni, Atomic number = 28; Number of protons = 28
Therefore, only Fe²⁺ has the same number of protons as Fe³⁺
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Cohden = Mahomes
Pine = Beckham Jr.
Coal = Lock
Mine = Forgoten no respect
Answer:
If there are 120 blue sweets then going by the ratio 3:4, there are 90 red sweets
Explanation:
Red sweets : Blue sweets = 3:4
Total ratio* = 3+4 = 7
Blue sweets = 4x = 120
Red sweets = 3x
where X is the ratio multiplier
x= 120/4 = 30
》 Red sweets = 3 × 30 = 90
