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3 years ago

What is the mean of the normal distribution shown below?

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

5 0

We have been given a graph of a normal distributed data and we are asked to find the mean from our graph.

Since we know that a normal distribution is a bell shaped curve, perfectly symmetric around its center. The density curve is symmetric about mean. In a normal distribution mean, median and mode are equal.

We can see from our graph that our graph is symmetric about 4. The center of graph is 4, therefore, mean of our data is 4.

Dovator [93]3 years ago

5 0

4 is the answer because it shows it in the photo. you're welcome, no need to thank me.

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Estimate sum 542+328=

Ghella [55]

542 --> 500

328 --> 300

Estimate: 800

8 0

3 years ago

Each question is worth 10 pts, I will do brainliest for the person who does both and follow pls help.

In-s [12.5K]

Answer:

1. 6

pennies = 9

nickels = 5

quaters = 5

dimes = 10

Step-by-step explanation:

18/3 = 6

as we know that there are 18 scoops, and 3 per icecream, we can divide the two to get the number of ice creams

#n = #q; #q = 2#d, this is a simple ratio, you just plug in the variables to get

5n = 5q = 10d = 15 coins

24 - 15 = 9 pennies

pennies = 9

nickels = 5

quaters = 5

dimes = 10

8 0

3 years ago

7. A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the

svp [43]

Answer: 475.59 meters .

Step-by-step explanation:

The correct equation is the following:

$y =-0 .02x^2 +9.5x + 5.6$

For this exercise you need to use the Quadratic formula:

$x = \frac{-b\±\sqrt{b^2-4ac}}{2a}$

In this case you can identify that the values of "a", "b" and "c" are:

$a=-0.02\\\\b=9.5\\\\c=5.6$

Now you must substitute these values into the Quadratic formula and then evaluate. You get:

$x=\frac{-9.5\±\sqrt{(9.5)^2-4(-0.02)(5.6)}}{2(-0.02)}\\\\x_1=475.588\\x_2=-0.588$

Choose the positive one and round it to the nearest hundreth:

$x_1\approx 475.59$

4 0

3 years ago

Find the equation (in terms of x ) of the line through the points (-2,6) and (1,0)

AysviL [449]

Answer:

2by5=,78

Step-by-step explanation:

if you 9thru7. into8 you get 2by 7

7 0

3 years ago

Read 2 more answers

Given a = 4, b = -2 and c = 8, evaluate ab - bc. -24 -4 8

Mrac [35]

(4*-2)-(-2*8)=
-8--16=8

8 0

3 years ago