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serious [3.7K]
3 years ago
9

A normal curve is ___________ about the mean. consequently, 50% of the total area under a normal distribution curve lies on the

left side of the mean, and 50% lies on the right side of the mean.

Mathematics
1 answer:
kozerog [31]3 years ago
8 0
In statistics, when you gather data points for the same test, you construct a distribution graph. For example, you make a statistics based on the score of a class for a 145-item test. You graph it based on frequency such as, 10 students got 50 points and so and so forth. When that test have a few outliers and have more or less the same score, you form a normal distribution graph. It is more commonly known as the Gaussian Bell Curve. An example would be shown in the picture.

A normal distribution curve is symmetric about the mean. As a result, the area under the curve on the left side of the mean would be equal to the area under the curve on the right side of the mean. So, each would constitute 50%.

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The lengths of the bases of a trapezoid are 17 inches and 10 inches. The trapezoid has an area of 189 square inches.
Mamont248 [21]

Answer:

height of this trapezoid is 14 inches.

Step-by-step explanation:

\boxed{Area -of -trapezoid=\frac{a+b}{2} h}

[ Here lengths, a = 17 and b = 10 and area of trapezium given 189 ]

using the formula:

\frac{17+10}{2} *h = 189

\frac{27}{2} h = 189

h = \frac{189*2}{27}

h  =14

For more trapezoid related questions: https://brainly.in/question/35963763

6 0
2 years ago
Read 2 more answers
If a =-2 and b= 2 what will be the value of a^b
raketka [301]
Write out the equation;

y=a^b 
y=(-2)^2 
y=(-2)(-2) 
y=4 

Therefore, the value of a^b is 4 

Hope I helped :) 
7 0
3 years ago
Read 2 more answers
Number 5 ABC or D? Please help
RoseWind [281]

Answer:

D

Step-by-step explanation:

you want to solve it out

start with multiplying z to each. you don't multiply it to the 6 because it is in the same parenthesis set, but you multiply it to everything in the other set.  After multiplying, you get: 2z^3 , 3z^{2} , 5z

now do that to the 6. After multiplying you get:  12z^{2}, 18z, 30

now set it all next to each other 2z^3 + 3z^{2} + 5z + 12z^{2} + 18z + 30

now combine like terms. start with the to the highest power. since there is only one that has a third power, you put that one first. then you combine the squared ones, and so forth.

work combining the squares: 3z^{2} + 12z^{2} = 15z^{2}

work combing the single z's: 5z + 18z = 23z

to get this:  2z^3 + 15z^{2} + 23z + 30

so, the answer is D

4 0
3 years ago
Nasir has an annual salary of 64,000 and his company pays him twice a month. What is the gross income per paycheck that Nasir re
ryzh [129]

64,000/2=32,000

32,000/12= $2,666.67 per paycheck

5 0
3 years ago
Which statement is true about the graphs of the two lines y = –6 and x = 1/6<br>?
ivanzaharov [21]
The lines are perpendicular to each other because the graph of y = –6 is a horizontal line with a slope that is undefined, and the graph of x = 1/6 is a vertical line with a slope of 0.
The lines are perpendicular to each other because the graph of y = –6 is a vertical line with a slope that is undefined, and the graph of x =1/6 is a horizontal line with a slope of 0.
The lines are perpendicular to each other because the graph of y = –6 is a vertical line with a slope of 0, and the graph of x =1/6 is a horizontal line with a slope that is undefined.
<span> The lines are perpendicular to each other because the graph of y = –6 is a horizontal line with a slope of 0, and the graph of x =1/6 is a vertical line with a slope that is undefined. </span>
4 0
3 years ago
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