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MatroZZZ [7]
3 years ago
9

In a normal distribution, what percentage of the data falls within 3 standard deviations of the mean?

Mathematics
1 answer:
Stells [14]3 years ago
4 0
99% using the 68- 95- 99 rule
For these kind of problems, it is always a good idea to just draw out a normal distribution curve.
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A researcher randomly samples 222 high school students to determine their favorite color and whether or not they played a sport.
Murrr4er [49]

Answer: 36/104

There are 104 students that play sports and only 36 out of 104 students has the favorite color blue, green, or purple.

Step-by-step explanation:

7 0
2 years ago
What is the measure of
EleoNora [17]

Answer:

129 degrees.

Step-by-step explanation:

As we can see, angle DCF is made up of 2 different angles, DCE and ECF, the sum of the measure of these two angles is equal to the measure of angle DCF.

75+54=129 degrees

Hope it helps!

4 0
3 years ago
Jason worked 3 hours more than Keith. Jason worked 12 hours. Which equation represents this situation, if k is the numbers of ho
ycow [4]

Answer:

j=k+3   (j=jason k+kieth)

Step-by-step explanation:

he did thrhee more so it will be adding 3 to k

8 0
3 years ago
Could 36 go into 57 and how many times
Marina86 [1]
Yes it can, but jost once
7 0
3 years ago
Read 2 more answers
Please please please please please help me <br> i will give brainliest
alukav5142 [94]
2x^2 - 4 = 68
add 4 to both sides
2x^2 = 72
divide both sides by 2
x^2 = 36
find the square root of each sides
x = 6, -6

ANSWER: the positive value of x is 6
7 0
3 years ago
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