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Alenkinab [10]
3 years ago
6

Assessment: To help assess student learning in her developmental math courses, a mathematics professor at a community college im

plemented pre- and posttests for her students. A knowledge-gained score was obtained by taking the difference of the two test scores.
(a) What type of experimental design is this?
Mathematics
1 answer:
Flauer [41]3 years ago
6 0

Answer: Randomized design.

Step-by-step explanation:

Randomization is the process of assigning the treatments or tested factors to the experimental units in an experiment in accordance to definite laws or probability is technically known as randomization.

A randomized design relies on randomization to control for the effects of extraneous variables.

In a randomized design, objects or subjects are assigned to groups completely at random. One standard method for assigning subjects to treatment groups is labelling each subject and afterwards, using a list of random numbers to select from the labelled subjects. It is used when the experiment has treatment conditions and subjects. Also, subjects are randomly assigned to different treatments.

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-38=-2(n+6)+6(3n+1) Can you please solve marking branlest show work
r-ruslan [8.4K]

Answer:

n = -2

Step-by-step explanation:

-38 = -2n -12 +18n +6

-38 =16n -6

-38 +6 =16n

-32= 16n

n=-2

3 0
3 years ago
Lines s and t are perpendicular. If the slope of line s is 5, what is the slope of line t
Pavel [41]
Slope of line t is -1/5

If two lines are perpendicular, the product of their slopes is -1
8 0
3 years ago
Quick I need help plz
Olenka [21]

Answer:

It's answer is 1/3 .

Hope it helps have a great time :)

6 0
3 years ago
Read 2 more answers
Cound someone please help me on this, I'm stuck. ​
Katyanochek1 [597]

Negative exponents work like this:

a^{-b}=\dfrac{1}{a^b}

So, in order to evaluate a negative exponent, you simply have to invert the base, and then raise to the positive equivalent of the exponent.

As an example, here are the first three exercises:

8^{-3}=\dfrac{1}{8^3}=\dfrac{1}{512}

(-4)^{-5}=\dfrac{1}{(-4)^5}=-\dfrac{1}{1024}

2k^{-4}=\dfrac{2}{k^4}

You can work out the rest applying this logic.

5 0
3 years ago
Help pls this for my math test
rewona [7]

Step-by-step explanation:

option C is correct....

6 0
3 years ago
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