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timurjin [86]
3 years ago
14

Sue wants to know whether wearing sunglasses improves driving performance. If she uses an independent groups design, she would m

anipulate the variable by randomly requiring half the drivers to drive with sunglasses and the other half to drive without sunglasses. having all drivers first drive without sunglasses and then with sunglasses. having half the drivers first drive without sunglasses and then with sunglasses and having the other half first drive with sunglasses and then without sunglasses. requiring all drivers to first drive with sunglasses and then without sunglasses.
Mathematics
1 answer:
MakcuM [25]3 years ago
4 0

Answer:

randomly requiring half the drivers to drive with sunglasses and the other half to drive without sunglasses.

Step-by-step explanation:

When employing an independent group design in a research or experimental study, the different groups in the study are assigned entirely different subjects such that, subjects in the treatment group are different from those in the control group. Therfore, adopting an independent group design in the scenario described above means diving the subjects into two at random with one half driving with sunglasses and the other half having to drive without it.

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kupik [55]

Answer:

–x² + 12x + 5

Step-by-step explanation:

x² + 3x

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The sum of the above expression can be obtained as follow:

.... x² + 3x

+ –2x² + 9x + 5

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

–x² + 12x + 5

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Thus, the sum of x² + 3x and –2x² + 9x + 5 is –x² + 12x + 5

3 0
3 years ago
Find the slope of the line joining the points (3,4) and (6,-1)
grandymaker [24]

Answer:

Step-by-step explanation:

(3,4) ; (6,-1)

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8 0
3 years ago
Read 2 more answers
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Vedmedyk [2.9K]
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8 0
3 years ago
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4 years ago
Estimate 46,214 - 18,941 by first rounding each number to the nearest thousand.
kirill [66]

The estimate of the given subtraction operation is 27,000

<h3>Estimating the value of numbers </h3>

From the question, we are to estimate the value of given operation. The operation is a subtraction operation.

The given subtraction operation is,

46,214 - 18,941

First, we are to round each number to the nearest thousand.

Round 46,214  to the nearest thousand

46,214 ≈ 46,000

Also,
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Now, subtract

46,000 - 19,000 = 27,000

Hence, the estimate of the given subtraction operation is 27,000

Learn more on Estimating Numbers here: brainly.com/question/17178459

#SPJ1

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2 years ago
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