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kow [346]
3 years ago
8

Of the 25 students who take a standardized test, the minimum score is 98 and the maximum score is 312. The mean score is 216. St

andard deviation is 52. What is the number of standard deviations that includes all the data values?
Mathematics
1 answer:
Wittaler [7]3 years ago
5 0

Answer:

5

Step-by-step explanation:

so we can say that 5 standard deviations include all the data values.

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In which of the expressions below will x = 12.5? Select all
erma4kov [3.2K]

The answer is D

2x / 5 = 5

5 x 5 = 25

2x = 25

25/2

x= 12.5

4 0
3 years ago
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Three groups of schoolchildren receive three different types of reading instruction for a school year. At the end of the year, s
ollegr [7]

Answer:

types of reading instruction - independent variable

reading comprehension of students - dependent variable

Explanation:

When it comes to the "experimentation" of  a study, there are factors or variables that are being considered. These are <em>"independent variable</em>" and <em>"dependent variable."</em>

Independent variable refers to the variable that is being controlled. This affects the dependent variable. The influence of the independent variable on the dependent variable is <u>very important.</u>

So, in the situation above, the independent variable is the "types of reading instruction for a school year" while the dependent variable is the "reading comprehension" of the students.

<em>This means that the reading comprehension of the students will largely depend on the types of reading material.</em>

Thus, this explains the answer.

6 0
3 years ago
Evaluate each function.<br> 14) g(x)= 3x² - 1; Find g(-3)
Vilka [71]

Answer:

g(-3)= 26

Step-by-step explanation:

g(x)= 3x² - 1

g(-3) means use -3 for x in the given equation.

g(-3)= 3(-3)² - 1

g(-3)= 3(9) - 1

g(-3)= 27 - 1

g(-3)= 26

6 0
2 years ago
A rectangle has an area of (12m-30n) square units. Its width is 6 units. Factor the expression for the area to find an expressio
garik1379 [7]

Answer: 2m - 5n

<u>Explanation:</u>

Using long division

  <u>    2m - 5n  </u>

6 ) 12m - 30n


width*length = area

6(2m - 5n) = 12m - 30n


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