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defon
3 years ago
6

If we collect experimental data on alcohol consumption from the same 100 individuals before and then after a course on the dange

rs of over drinking, we are using a * 1 point A) randomized block design. B) post-test only design. C) matched pairs design. D) randomized comparative design E) completely randomized design.
Mathematics
1 answer:
Aleks [24]3 years ago
5 0

Answer: D) randomized comparative design

Step-by-step explanation:

Randomized comparative design is an experiment which uses comparison of two or more treatments, also known as an experiment designed to show differences between two samples or populations which have being exposed to two different conditions or treatments are compared to each other. In the question above data collected before was compared to data gotten after the dangers of alcohol.

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WARRIOR [948]

Answer:

C. 1365

Step-by-step explanation:

The expression nCr can be written with the simple equation:

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So to evaluate 15C4:

15! / ((15-4)! * 4!)

= 1365

So 15C4 = 1365

Cheers.

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4 years ago
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Joshua has 7 different varieties of tulips in his garden. If he has 385 tulip plants in total and equal numbers of each variety,
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Answer:

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Step-by-step explanation:

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4 years ago
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4 years ago
A sports shop has 84 employees. 25% of the employees work part-time. How many part-time employees does the sports shop have?
Zolol [24]

Answer:

The sports shop has 21 part-time employees.

Step-by-step explanation:

Solution:

What is 25% of 84?

.Y is 25% of 84

Equation: Y = P% * X

Solving our equation for Y

Y = P% * X

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Converting percent to decimal:

p = 25%/100 = 0.25

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Or another quicker way....

50% is half of the whole, and 25 is half of 50.

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equals 21 too, I don't recommend to use it as row form.

4 0
3 years ago
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