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Aleksandr [31]
4 years ago
13

Score data from a statewide exam for 10th-graders follows a normal distribution, has a mean of 77, and has a standard deviation

of 6.5.
According to the Empirical Rule, 34% of test scores fall into what range? Select all that apply.

Below 70.5

Below 70.5 and above 83.5

Between 70.5 and 77

Below 77

Between 77 and 83.5

Above 77

Above 83.5
Mathematics
1 answer:
Oduvanchick [21]4 years ago
6 0

Answer:

Below 70.5 because of the 68, 95, and 97.5 rule

Step-by-step explanation:

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Please need help on this
Alex

Answer:

there is an 88% chance it will land on teal, because if you do 16/18, you get 0.8 repeating. then, you multiply by 100 and get 88%

4 0
3 years ago
Therea re 8 kids at a birthday party. If there are 6 girls and 2 boys at the party, what draction of the kids are girls?
Alenkasestr [34]

Answer:

3/4

Step-by-step explanation:

The total number of children is 8 and the number of girls is 6. This can be represented as 6/8.

You would then need to simplify...

6/2=3

8/2=4

which which lead you to 3/4!

6 0
2 years ago
Justify your reasoning when solving the equation: 3(x+4)=8x-18
vampirchik [111]

Answer:

6

Step-by-step explanation:

3x plus 12= 8x -18

subtract twelve on both sides:

3x= 8x- 30

minus 8x on both sides:

-5= -30

divide:6

3 0
2 years ago
7.5d = 2.5d Lin divided each side by 2.5d and Elena subtracted 2.5d from each side with both leads to the solution
dedylja [7]

Answer:

Elena's move will lead to the solution of the problem

Step-by-step explanation:

To solve the equation 7.5d=2.5d, Lin divides each side by 2.5d, and Elena subtracts 2.5d from each side. Will both moves lead to the solution? Explain your reasoning

Given:

7.5d = 2.5d

Lin divides each side by 2.5d, Lin:

7.5d / 2.5d = 2.5d / 2.5d

3 = 1

This can not be the solution to the problem because 3 can not be Equal to 1

Elena subtracts 2.5d from each side

7.5d = 2.5d

7.5d - 2.5d = 2.5d - 2.5d

5d = 0

This can lead to the solution of the problem

Elena's move will lead to the solution of the problem

6 0
3 years ago
Lorenz total payment for his loan was $13,536.
Vera_Pavlovna [14]

Answer: $376

Step-by-step explanation:

Divide 13,536 by 36

13,536/36 = 376

6 0
3 years ago
Read 2 more answers
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