Which statement is true of normally distributed data?
A.
Approximately 90% of data falls within 2 standard deviations (±2) of the mean.
B.
Approximately 90% of data falls within 3 standard deviations of (±3) the mean.
C.
Approximately 95% of data falls within 2 standard deviations (±2) of the mean.
D.
Approximately 95% of data falls within 3 standard deviations (±3) of the mean.
Please explain and no answering just for points.
Answers
C
have a nice day!!!!!!!!!!!!!!!!!!!!!!!
Approximately 95% of data falls within 2 standard deviations (±2) of the mean. Option D is correct.
What is a normal distribution?A normal distribution is a type of continuous probability distribution for a real-valued random variable such that the values are symmetric about a mean and the curve has bell shape.
Standard deviation is the measure of the randomness of the distribution. The curve has its peak at the mean.
As standard deviation increases, the peak of the curve comes lower and the distribution becomes more and more dispersed.
In a normal distribution 68% of the values falls within 1 standard deviation
and 95% of the values falls within two standard deviations. 99% of the values falls within three standard deviations.
Hence, approximately 95% of data falls within 2 standard deviations (±2) of the mean.
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Related Questions
If you are good at math please dm me on ig 14lies, or twitt binderelluh1
Answers
Answer:
Okay
Step-by-step explanation:
60 minutes equal to how many hours
Answers
Answer:
One hour
Step-by-step explanation:
Sixty minutes is one hour. Hope I helped you out.
Answer:
1 hour
Step-by-step explanation:
60 seconds = 1 minute
60 minutes = 1 hour
Lil Pump = Forever
find the slope thanks PLEASE
Answers
Answer:
37) -1/3
38) 8/5
39) 0
40) -2/3
Step-by-step explanation:
A forest covers 73,000 acres. A survey finds that
0.3% of the forest is old-growth trees. How many acres of
old-growth trees are there?
Answers
Answer:
0.3% of 73,000 acres
in acres its 219
in square foot its 9,539,640
and in square yard its 1,059,960
Step-by-step explanation:
What is n2+5 If n=5?
Answers
Is that cube or n just multiply to 2?
Answer:
15
Step-by-step explanation:
n is 5 so 5 times 2 equals 10 and plus 5 it equal 15
In the 2006 season, Tom Brady threw for 3,529
yards. In the 2007 season, he threw for 2,806
yards. What is the percentage decrease
Answers
3529-2806=723
(723/35290)x100= 20.4873901955
First, work out the difference (decrease) between the two numbers you are comparing. Next, divide the decrease by the original number and multiply the answer by 100. If the answer is a negative number, this is a percentage increase.
Answer:
59.02%
Step-by-step explanation:
SO SORRY THAT THIS IS LATE anyway what you is minus the biggest number by the smallest number which would be 3,529 - 2,806 = 723
BECAUSE 3,529 is the original number you would do 723 / 3,529 = 0.5902521
then you would times that number by 100
0.5902521 x 100 = 59.02%
hope this helps
How many 1/ 3 pound hamburger patties can be made from 4 pounds of ground beef?
Answers
Answer:4
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
Each pound is equal to 3 of the 1/3 pound patties
multiply 3 by 4 and you get 12.
What is the slope of the line whose equation is y=3/5x-4
Answers
y = mx + b
Your equation in slope-intercept form (which you already have :)):
y = 3/5x - 4
So your slope is m = 3/5
Do you need help finding the y-intercept or x-intercept? I hope this helps and answers your question! Have a lovely day!
A quadratic function models the graph of a parabola. The quadratic functions, y = x2 and y = x2 + 3, are modeled in the graphs of the parabolas shown below. Determine which situations best represent the scenario shown in the graph of the quadratic functions, y = x2 and y = x2 + 3. Select all that apply. From x = -2 to x = 0, the average rate of change for both functions is negative For the quadratic function, y = x2, the coordinate (2, 3) is a solution to the equation of the function. The quadratic function, y = x2 + 3, has an x-intercept at the origin The quadratic function, y = x2, has an x-intercept at the origin From x = -2 to x = 0, the average rate of change for both functions is positive For the quadratic function, y = x2 + 3, the coordinate (2, 7) is a solution to the equation of the function.
Answers
Answer:
Step-by-step explanation:
From x = -2 to x = 0, the average rate of change for both functions is negative
The quadratic function, y = x2, has an x-intercept at the origin
For the quadratic function, y = x2 + 3, the coordinate (2, 7) is a solution to the equation of the function.
those 3 are good
The quadratic function, y = x², has an x-intercept at the origin is, TRUE
And, The quadratic function, y = x² + 3, has an x-intercept at the origin is, FALSE
From x = -2 to x = 0, the average rate of change for both functions is positive is, FALSE
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Now, We have;
When viewing a graph, you start from the left and go to right and from left to right from -2 to 0 the graph is declining.
Hence, From x = -2 to x = 0, the average rate of change for both functions is negative is true.
And, Both are declining if you read the graph from left to right.
For the quadratic function, y = x², the coordinate (2, 3) is a solution to the equation of the function is false.
y = x²
If we insert 2 into y = x² we get y = 4 but our point (2, 3) has y = 3
For the quadratic function, y = x² + 3, the coordinate (2, 7) is a solution to the equation of the function is true.
If we insert 2 for x, we see that;
⇒ y = x² + 3
⇒ y = 2² + 3
⇒ y = 7
And, our y value in the point (2, 7) is 7.
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In rhombus ABCD , m∠EAB=27∘ .
What is m∠EBC ?
Enter your answer in the box.
m∠EBC = °
Rhombus A B C D with diagonals B D and A C intersecting at E.
Answers
Answer:
63°
Step-by-step explanation:
ABCD (rhombus): AC ⊥ BD and bisect at E and same length of 4 sides
∠EBA = 90 - 27 = 63
∠EBC = ∠EAB = 63°
Malik has two pencils. He has four blue pencils and 2 red pencils. What is the radio of red pencils and blue pencils?
Answers
Answer: 2:4 or 1:2
You could also write it in a fraction 1/2
Answer:
2:4
Step-by-step explanation:
We know that Malik has 4 blue pencils and 2 red pencils. Therefore, the ratio of red pencils to blue pencils is 2:4.
# of red pencils : # of blue pencils
2 red pencils : 4 blue pencils
2:4
I hope this helps!
Please help.. Please. Is this a positive trend or negative trend or no trend
Answers
Answer:
it's a no trend cause its literally nothing but dots
The pizza shop down the street offers a special of a large pizza with 3 toppings. The choices of toppings
are pepperoni, sausage, ham, pineapple, cheese, onions, green peppers, hot peppers, mushrooms, and
anchovies.
How many ways can you arrange 3 toppings out of 10 toppings on a pizza?
Answers
Answer:
120 ways
Step-by-step explanation:
To solve this question, we would be using the law of combination.
In combination, we say that
nCr = n! / (n - r)! r!, where both r and n are integers.
Now, referring to question, we are asked how many ways we can arrange 3 toppings out of 10. This means we're looking for 10C3. Applying the earlier laid out formula, we have
10C3 = 10! / (10 - 3)! 3!
10C3 = 10! / 7! 3!
10C3 = 3628800 / 5040 * 6
10C3 = 3628800 / 30240
10C3 = 120
Therefore, the toppings can be arranged in 120 ways.
Leave a like if it helped you, please
Jackson has twice as many cards as his friends Alex and Chase combined. Alex has 55 Cards in his collection. Jackson Has 200 cards in his collection. How many cards does Chase have in his collection?
Answers
Answer:
45
Step-by-step explanation:
200 divided by 2 = 100-55=45
Answer:
45
Step-by-step explanation:
200-55=145
Since Jackson has twice as many as them combined, he would have 45.
hi savina if u not give reply so I leave brainly
Answers
Answer:hope she/he replies
Step-by-step explanation:
Pythagorean Theorem Quiz.
1.) Find the unknown side length. Simplify answers that are radicals.
4
3
2.) Find the unknown side length. Simplify answers that are radicals.
16
12
Answers
Answer:
1.) 5 2.) 10.58
Step-by-step explanation:
For each one, you use the equation a^2 + b^2 = c^2 where c is the "hypotenuse"-- the side of the triangle opposite (facing) the right angle which is shown with a small box. The variables a and b do not matter, as long as they are the "legs", the other 2 sides.
So it is 4^2 + 3^2 = c^2 which simplifies to 16+9=25=c^2 and square root both sides and you get c=5
and 12^2 + b^2 = 16^2 which simplifies to 144+ b^2 = 256 and subtract 144 from both sides and you get b^2 = 112 and square root both sides and it is approximately 10.6 :)
Can someone tell me how to do a transversal angle measurement with steps and angles
Answers
Answer:
Sorry I am not sure but when I figure it out..... I prolly won't
Step-by-step explanation:
Answer:
When two lines are cut by a transversal, the pairs of angles on one side of the transversal and inside the two lines are called the consecutive interior angles . If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles formed are supplementary
Step-by-step explanation:
Write the equation of the line that passes through the point 2,-1 and has a slope of -3
Answers
Answer:
-3
Step-by-step explanation:
-3 is your answer
what is the distance, in units, between the y-intercept of f(x) = x^2 +7x - 18 and the y-intercept of the linear function that passes through the points shown on the table below
x g(x)
-5 2
10 11
25 20
60 41
Answers
Answer:
13
Step-by-step explanation:
f(x) = x² +7x - 18
y interception: x=0 y = -18 (0 , -18)
line g(x): --- the data of (60,47) to make a linear function
y = mx + b
m = (11-2) / (10 - -5) = 9/15 = 0.6
b = mx - y = 0.6 * (-5) - 2 = - 5 ... y intercept: (0 , -5)
distance between 2 y intercept: 18-5 = 13
y = 0.6x - 5
Answer:
23
Step-by-step explanation:
f(x) (y intercept ) = -18
g(x) (y intercept) = 5
difference so f(x)-g(x)
-18-5 = -23
the answer cannot be negative
It’s in the picture please and thank you ^*
Answers
Answer:
38 degrees
Step-by-step explanation:
3x+2x+15+95+60=360
the sum of the angles of a quadrileteral=360
5x+170=360
5x=360-170
5x=190
x=190/5
x=38 degrees
PLEASE ANSWER ASAP!
2(h -3.5) = -11
what is h?
Answers
Answer: -2
Step-by-step explanation:
2(h -3.5) = -11 Distributive property
2h - 7 = -11. Add 7 to both sides
2h = -4. Divide both sides by 2
h = -2
Answer: The answer is -2 :)
Step-by-step explanation: 2(h -3.5) = -11 distributive propert
2h-7=-11 Add -7 to both side
+7 =+7
2h=-4 Divide 2 to both side
2 = 2
h=-2
Which of the following is the correct quotient identity?
Answers
Answer:
no.c is ther your answer
i need help with this!! i have to get my hw done quick!!
Answers
Step-by-step explanation:
221+w=274..................
.......
Answer:
53 + 221 = 274
Step-by-step explanation:
I'm pretty sure its saying
w + 221 = 274
and in this case, w = 53
because if you subtract 274 by 221 you get 53.
Best of luck to you!!!
which expression is equivalent to 3x - -3y
Answers
Answer:
3x + 3y
Step-by-step explanation:
The two minus signs make a plus sign. Therefore, we replace the minus signs with a plus sign, getting 3x + 3y.
The two minus signs cancel each out and you add it instead.
What is the equation of line m
Answers
Answer:
so I dont know what you mean by that
Step-by-step explanation:
there is no way for anyone to tell sorry
Write the expression
into words.
6 + x
plz help
Answers
Answer:
six plus x.
Step-by-step explanation:
Congruence question will give brainliest
Answers
Answer:
A
Step-by-step explanation:
You paint four walls. Each wall is a rectangle with a length of 18 feet and a height of 12 feet. One gallon of paint covers about 320 square feet. How many gallons of paint do you need in order to cover the walls?
Answers
Answer:
you will need exactly 2.7 gallons of paint but if rounded you'll need 3 gallons
Step-by-step explanation:
Answers to these 3 questions ?
Answers
60 = 6y
10 = y
8(10) + 36
80 + 36
116
116° for the top and bottom angles
48 + x = 64
x = 16
64° is the measurements for the horizontal angles
44. 11.22(2) = 22.44
TE = 22.44
45. 4x + 8 + 27 = 6x
35 = 2x
17.5 = x
4(17.5) + 8
70 + 8
CD = 78
6(17.5)
CE = 105
WILL GIVE BRAINLIEST PLS HELP
Chantal is planning to hike with some friends in the mountains. The trail map below shows the actual distance of their route from the beginning of the Blue Trail to the junction with the Red Trail, and from there to the top of Peak 1.
Chantal determined that the length of their route on the map measured 4 1/2 inches. Based on that length, what is the scale on the map?
Blue trail: 2.4 miles, Red trail: 1.6, Green trail: 1.8
A. 1 inch : 1 1/4 miles
B. 1 mile : 1 1/8 inches
C. 1 mile : 8/9 inch
D. 1 inch : 8/9 mile
Answers
Answer:
the answer is C
Step-by-step explanation:
