The heights of a large population of ostriches are normally distributed. Which is the closest to the percentage of these heights that is within 3 standard deviations of the mean?
a. 95%
b. 99.7%
c. 0.3%
d. 5%
The value of 99.7% is the closest to the percentage of these heights that is within 3 standard deviations of the mean.
What is the empirical rule?If your distribution follows a normal distribution, the standard deviation and mean can tell you where the majority of the data are.
It is given that:
The heights of a large population of ostriches are normally distributed.
The percentage of these heights that is within 3 standard deviations of the mean
As we know from the empirical rule:
It is the rule of 68-95-99.7.
From the data given in the question:
The height of a large population of ostriches is normally distributed.
So,
X ~ (u, б²)
Normal distribution.
P{u - 3б < X < u + 3б}
From the distribution table:
P{u - 3б < X < u + 3б} = 99.7%
Thus, the value of 99.7% is the closest to the percentage of these heights that is within 3 standard deviations of the mean.
Learn more about the empirical rule here:
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Find the measure of each numbered angle on this Triangle.
Answer:
m<1 = 69
m<2 = 37
m<3 = 106
m<4 = 21
Step-by-step explanation:
PLEASE HELP I WILL GIVE BRAINLIEST
Answer:
If using one pound of pumpkin the baker needs to use 4 pounds of flour mixture
Step-by-step explanation:
step 1: I am going to convert the measurements
into decimals
8/5=1.6
2/5=.4
step 2: I will use cross multiplication to find out how much pumpkin for one pound of flour
1.6=.4
1=?
1*.4=.4/1.6=.25
step 3: I will convert .25 into a fraction
.25=1/4
for every 1/4 pound pumpkin, I will use 1 pound of flour
which is why
If using one pound of pumpkin the baker needs to use 4 pounds of flour mixture
A trailer is 160 inches. A driveway is 60% longer than the car. How long is the driveway?!?
Answer:
266.666667
Step-by-step explanation:
Can someone helpppp plssss
Answer:
angleQ+angleR is 180degrees because of the properties of isoceles trapezoid. So, if you set equation and solve, you'll get the fact that x is 12, and angleR is 130degrees, and angleQ is 50degrees. According to the properties of isoceles trapezoid, angleQ is the same as angleT. So, angleT is 50degrees
Answer:
Step-by-step explanation:
the graph of y=x^2-4x is shown. name a zero of the function below
Answer:
0 and 4
Step-by-step explanation:
y = x^2 - 4x can be factored as follows: y = x(x - 4).
We find the zeros by setting this factored form equal to zero and solving for x:
x(x - 4) = 0, or x = 0, or x = 4.
The two zeros of this function are 0 and 4.
NEED HELP ASAP!!!!!!!!!!!!!!!!!
Answer:
Side length of AC = 4.6
Step-by-step explanation:
sin (33°) = 2.5 / AC
AC = 25 / sin (33°)
AC = 4.59
Final answer of AC rounded to the nearest tenths is , AC = 4.6
Enter the slope of the line through the points (5, 2) and (-3, -7). *
Answer:
m= 9/8
Step-by-step explanation:
(5, 2) and (-3, -7)
Slope:
m=(y2-y1)/(x2-x1)
m=(-7-2)/(-3-5)
m=(-9)/(-8)
m=9/8
PLEASE I NEED HELP!!!
If technology improves, what would happen to the PPC?
Answer:
For the economy as a whole, an improvement in technology shifts the production possibilities frontier outward. Production Possibility Frontier (PPF): An increase in technology that allows for greater output based upon the same inputs can be described as an outward shift of the PPF, as demonstrated in this figure.
simplify
5/8 m³ + 2 - 1.4 m³ =
Answer:
-0.775m^3 + 2
PLZ IF RIGHT I WILL GIVE BRAINLIST: One year, the population of a city was 64,000. Several years later it was 53,120. Find the percent decrease.
Ans=______%
the answer is it decreased 17%
im not 100% btw
Find the value of x. Round to the nearest tenth of a unit. 203 m 22° O A. 82.0 m O B. 218.9 m O C. 502.4 m O D. 541.9 m
Answer: 502.4 m
Step-by-step exp
Answer: C or 502.04
Step-by-step explanation: took the practice got 100%
If p : q = 2/3 : 3 and p : r = 3/4 : 1/2 , calculate the ratio p : q : r Giving your answer in its simplest form.
Answer:
Step-by-step explanation:
p:q = ⅔:3 = 2:9 = 6:27
p:r = ¾:½ = 3:2 = 6:4
p:q:r = 6:27:4
HELP ME PLEASE I BEG YOU AND I WILL VOTE YOU BRAINLIEST IF YOU REALLY HELP!!!!
Answer:
The correct answer is A(-3,-5)
help pleaseeeeeeeee?!?!
Strong, they are all close together and close to the line.
Answer:It looks like it would be strong Step-by-step explanation: They are close together.
George Washington throws a baseball with an initial velocity of 20.2 feet per second at an angle of 69 degrees with the horizontal. Find the initial vertical and horizontal velocity of the ball.
A. Horizontal 9.6 and vertical 15.2
B. Horizontal 7.2 and vertical 18.9
C. Horizontal 18.9 and vertical 7.2
D. Horizontal 15.2 and vertical 9.6
The initial vertical and horizontal velocity of the ball will be 18.9 feet per second and 7.2 feet per second, respectively. Then the correct option is C.
What is a vector?The quantity which has magnitude, and direction and follows the law of vector addition is called a vector.
George Washington tosses a baseball with an underlying speed of 20.2 feet each second at a point of 69° degrees with the even.
The initial vertical velocity of the ball is given as,
⇒ 20.2 x sin 69°
⇒ 20.2 x 0.9335
⇒ 18.9 feet per second
The initial horizontal velocity of the ball is given as,
⇒ 20.2 x cos 69°
⇒ 20.2 x 0.3583
⇒ 7.2 feet per second
The initial vertical and horizontal velocity of the ball will be 18.9 feet per second and 7.2 feet per second, respectively. Then the correct option is C.
More about the vector link is given below.
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Need answer plz help! No links :(
Half the number of guesses are
less than what number?
Answer:
C. 74
Step-by-step explanation:
add up all the numbers but not the value so you have 18 numbers. divide that by 2 and get 9. so 74 is between 73 and 78 so it divides the 18 numbers evenly into 9 and 9.
.. What is the value of this expression? 6 + (-9) - (-5) i need help on my test can u guys help me and no links because the links u guys give me dont work(no disrespect)
Answer:
-8
Step-by-step explanation:
What is the value of this expression? 6 + (-9) - (-5)
6 + (-9) - (-5)
= 6 - 9 + 5
Following the rules of BODMAS, addition comes first before subtraction
= 6 - 14
= - 8
6 + (-9) - (-5) = -8
Note:
- * - = +
- * + = -
+ * - = -
+ * + = +
Then using BODMAS
B - bracket
O - of
D - division
M - multiplication
A - addition
S - subtraction
5×(985÷628)-(752×492)=??
Please fast as u can....
35pts+brainllist answer
Answer:
-369976.157643
Step-by-step explanation:
find the total surface area of this cone
Answer:
Step-by-step explanation:
3.14*10*(10+24^2+10^2 squared)
31.4*5870 squared
31.4*76.62
240.5554
I don't know if this is right
PLEASE ANSWER THIS FOR MEEEEE
Answer:
23°
Step-by-step explanation:
sin ∠N= OP/NO= 19/49
⇒∠N ≈ 23°
Someone plz help me giving brainliest!
Answer:
the estimate is : 39 7/32
the answer is : 46 9/35
The three interior angle measures of this triangle are x= ___, y= ___, and z= ___.
Answer:
∡x = 30°
∡y = 70°
∡z = 80°
Step-by-step explanation:
what is the value of ( 7 plus 2 cubed) x 9
Answer:
135
Step-by-step explanation:
[tex](7 + 2 {}^{3} ) \times 9 \\ = (7 + 8) \times 9 \\ = 15 \times 9 \\ = 135[/tex]
Answer:
135
Step-by-step explanation:
2 cubed=8
8+7=15
15x9=135
Can someone help me quick. I really need help!! I’ll mark brainliest!! Please & thank youuu!
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Stefanie bought a package of pencils for $1.75 and some erasers that cost $0.25 each. She paid a total of $4.25 for these items.
Answer:
Stefanie bought 10 erasers.
Step-by-step explanation:
Stefanie bought a package of pencils for $1.75 and some erasers that cost $0.25 each. She paid a total of $4.25 for these items.
Beind "x" be the number of erasers bought, you can express Stepanie's purchases by the equation:
1.75 + 0.25*x = 4.25
Solving:
0.25*x = 4.25 - 1.75
0.25*x = 2.5
x= 2.5÷ 0.25
x=10
Stefanie bought 10 erasers.
Answer:
10 erasers
Step-by-step explanation:
Can someone help me i will give extra points
For the top part, both equations are vertical angles, so both equations will equal the same angle.
(4 + 23x) = (24x)
4 + 23x = 24x
4 = 24x - 23x
4 = x
Plug in x = 4 into both equations.
4 + 23(4) = 24(4)
4 + 92 = 96
96 = 96
Since x = 4 is a solution for both equations, the angle that is equal to both is 96 degrees.
Answer: 96 degrees is the angle--------------------------------------------------------------------------------------------------------------
For the bottom part, both equations lie on the same straight line, so adding both equations together will equal 180 degrees.
(x + 120) + (x + 80) = 180
x + 120 + x + 80 = 180
2x + 200 = 180
2x = 180 - 200
2x = -20 (don't worry about having a negative solution)
x = -10
Plug in x = -10 into both equations.
(-10) + 120 + (-10) + 80 = 180
110 + 70 = 180
180 = 180
Since x = -10 is a solution for both equations, the angle for equation (x + 120) is 110 degrees and angle for equation (x + 80) is 70 degrees.
Answer: Since the question asked to find a measure of the angle indicated in bold, the angle measure is 70 degrees.Plz show your work.
Answer:
look at the picture i sent.......
HELP PLZ!!!
A chord is a diameter.
-always
-sometimes
-never
Answer:
always hope this helps :)
Step-by-step explanation:
Step-by-step explanation:
sometimes would be your answer<3
The answer is sometimes, but this is only when the chord passes through the centermost point on the circle.