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leva [86]
4 years ago
5

Random assignment is important in experiments because: Group of answer choices

Mathematics
1 answer:
Helga [31]4 years ago
8 0

Answer:

D. it balances differences between participants across experimental groups.

Step-by-step explanation:

A. it eliminates experimenter expectancy effects.

this is the effect of <em>random sampling</em>

B. it ensures that the samples are representative of the population.

this needs <em>minimum sample size and random sampling</em>

C. it magnifies the validity of the operational definitions used in the study.

Not true, <em>doesn't magnify</em> the validity

D. it balances differences between participants across experimental groups.

<em>True</em>

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Estimate the value of?
otez555 [7]

Answer:

D) 2.0

Step-by-step explanation:

We know that √2 = 1.414213562 ≈ 1.4, π ≈ 3.14, and √5 = 2.236067978 ≈ 2.2 . Next, I found out that √2π = 4.442882938 which rounds to 4.4. Then, I found out that 4.4 ÷ √5 equals to 1.96773982. So, if we round our answer to the nearest whole number, we will get 2.

7 0
4 years ago
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Freshly frozen yogurt is the popular place in town. Saturday is their busiest night. The ratio of number of cones to the number
Vitek1552 [10]

Answer:

On Saturday night it had sold 35 numbers of cups.

Step-by-step explanation:

On the Saturday night the ratio of the number of cones to the number of cups sold is 6 : 5 in Freshly frozen yogurt however on Sunday night the ratio of the number of cones to the number of cups is 4 : 1.

Now, if the Freshly frozen yogurt sold 42 cones on Saturday night then in the ratio of 6 : 5, it sold cups \frac{5}{6} times the number of cones.

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7 0
3 years ago
Give each trig ratio as a fraction in simplest form
Volgvan
Sin D is 21/29
cos D is 20/29
tan D is 21/20
sin E 20/29
cos E is 21/29
tan E is 20/21

sin is y/r
cos is x/r
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Two different perspectives of the triangle, D and E.
5 0
3 years ago
What is the mean of 20,28,22,35,47,90
Basile [38]
So add all the numbers together (20 + 22 + 28 + 35 + 47 + 90) and you'll get 242. Then you take the number and divide it by the numbers in your set (you have 6 numbers so you'll divide by 6) 242/6. The answer would be 40.3333333 (repeating decimal). I hope this helps!
7 0
4 years ago
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QUESTION: Determine if the statement is true or false? if false give an counterexample.
Jobisdone [24]

Answer:

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Step-by-step explanation:

<u>Actual question is:</u>

  • logf 4(3d) + log4 1 = log4 3d

<u>Solution:</u>

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<u>If we assume f = 4, then</u>

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but log4 4 = 1

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Therefore the statement is False

5 0
3 years ago
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