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Firdavs [7]
3 years ago
9

A researcher randomly selected 30 people to participate in a study to investigate which of two materials, A or B, used in the he

els of sneakers will last longer. The researcher is considering two design types for the study.
Design 1: Randomly assign 15 participants to wear sneakers with material A on their left feet and material B on their right feet. The remaining participants will wear sneakers with material B on their left feet and material A on their right feet.
Design 2: Randomly assign 15 participants to wear sneakers with material A on both feet and the remaining participants to wear sneakers with material B on both feet.
Which of the following best describes each design?
Mathematics
1 answer:
Yanka [14]3 years ago
6 0

Answer:

Design 1

Step-by-step explanation:

Design one would work better because the students get to see both materials (each on one foot) and if they do the same things each day with both feet, they can test how the material works with the activity...If that makes sense

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10 months ago
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
DENIUS [597]

Answer:

The answer is A

Step-by-step explanation:

$20,000 • .12= $2,400

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4 0
3 years ago
Find the common ratio for the geometric sequence for which a1=3 and a5=48
Rama09 [41]

The ratio is common, so you could write:

a1 * r^4 = a^5 (you do r^4 because there are 4 times you need to multiply by the ratio to get from a1 to a5)

Plug in the values:

3 * r^4 = 48

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7 0
3 years ago
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Step-by-step explanation:

fill in the missing fraction parts

4 0
1 year ago
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goldfiish [28.3K]

Answer:

No solution

Step-by-step explanation:

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3 0
2 years ago
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