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erica [24]
3 years ago
9

A-

Mathematics
1 answer:
andrew11 [14]3 years ago
7 0

Answer:

answer is c

Step-by-step explanation:

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Chris has been hired to assess a new version of a college entrance exam. He randomly assigns 100 high school juniors to take the
balu736 [363]

Answer:

Internal validity

Step-by-step explanation:

The internal validity here is weak

Internal validity describes the extent to which an evidence weighs the cause and effect claim. In this study, the internal validity that brought about failure in the new exam is mainly due to the environment where the exam was written and not the new exam itself.

So this validity is weak in claiming that the new exam is not a good substitute for the old exam.

Putting them in the same good environment might help the researchers to draw a better conclusion.

7 0
3 years ago
if you are told only that you scored 80th percentile do you know from the description exactly how it wad calculated? Explain
Dmitriy789 [7]

<span>We know that there is no universal acceptance meaning of a percentile. When someone told you that you are in the 80th percentile, the meaning of that is you have achieved the lowest score that is greater than 80 percent of the score. It is calculated by using the formula     <span>R = P/100 x (N + 1)</span></span>

3 0
3 years ago
HELPPPPPPP me with #7
Anna007 [38]
(10x+y)(100x^2-10xy+y^2)

5 0
3 years ago
Read 2 more answers
Simplify the following monomials pls
velikii [3]

Answer:

1.) a^4b

2.) p^3q^4

3.) 2n^42n^4

4.) 5xy^2z

5.) 2a^3b^5

I hope this helps:

4 0
3 years ago
Ms. Carey is planning to host a neighborhood picnic. To make sure she had enough ingredients, she was making a table of possible
lukranit [14]

Answer:

5 and 48

Step-by-step explanation:

27:45

Simplify the ratio

3:5

The first one must be 5, and option 1 (5 and 48) is the only one with 5.

6 0
2 years ago
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