An IQ test is known to have an approximate normal distribution with mean 100 and standard deviation 15. Using the Empirical Rule, about what percentage of test takers will have an IQ score between 85 and 115?
Answers
Answer: 68%
Step-by-step explanation:
Empirical rule is basically using a bell curve along with mean and SD to find the center percentage. So take the mean right. 100 if you add 15 which is the SD you get 115 or 34.1% from 100 to 115. If you do the same thing but subtract this time 100-15=85 34.1% again from 85 to 100. So 85 to 115 is 34.1%+34.1%=68%
Related Questions
Tom's father is carpeting a rectangular room that has an area of 240 square feet. The width of the room is 15 feet. How long is the room?
Answers
Answer:
16 feet is the length of the room
Step-by-step explanation:
to find area, you do length x width. If you are trying to find L in L x W = A then you have to divide 240 by 15 to get 16 feet as the length
Calculate the area of triangles using two different methods. figures are now drawn to scale.
Answers
Answer:
the formula is base times hight divided by two so use the formula to sovle the problem
Step-by-step explanation:
The area of the triangles given are 52.5 feet² and 369 inches² respectively.
What is Area?Area of a two dimensional shape is the total region which is bounded by the object's shape.
The basic formula to calculate the area of a triangle is,
Area = [tex]\frac{1}{2}[/tex] × base × height
1. Base = 12 + 3 = 15 feet
Altitude/height = 7 feet
Area = [tex]\frac{1}{2}[/tex] × 15 × 7 = 52.5 feet²
2. Calculating the area of two separate triangles and then adding it,
Area = ([tex]\frac{1}{2}[/tex] × 32 × 18) + ([tex]\frac{1}{2}[/tex] × 9 × 18)
= 288 + 81
= 369 inches²
Hence the area of the two figures is 52.5 feet² and 369 inches² respectively.
Learn more about area here :
https://brainly.com/question/11952845
#SPJ2
URGENT: Find the value of X
Answers
Answer:
72x
Step-by-step explanation:
Find the measure of unlabeled angle in the quadrilateral
Answers
Answer:
x=140
Step-by-step explanation:
A quadralterial interior angles sum up to 360. We are given three angles and need to find the missing angle.
Let x, represent the missing angle.
[tex]60 + 55 + 105 + x = 360[/tex]
[tex]220 + x = 360[/tex]
[tex]x = 140[/tex]
Calculate the puppy's speed at 6 seconds.
Answers
Answer:
a. 6 m/s
Step-by-step explanation:
Distance = 36 meters
Time = 6 seconds
Speed = Distance ÷ Time
Speed = 36 m ÷ 6 secs
Speed = 6 m/s
circle has diameter 10. What's the area?
a
50π
b
20π
c
100π
d
25π
Answers
Answer:
D) 25π
Step-by-step explanation:
Area of a circle formula:
A = πr²
r = d/2 = 5
Work:
A = πr²
A = π5²
A = 25π
A taxi cab costs $1.75 for the first mile and $0.75 for each additional mile. Which equation could be solved to find how many miles you can travel in a ta
for $15.25, given that is the number of additional miles?
Answers
Answer:
18
Step-by-step explanation:
HELP PLS THIS IS DUE TODAY (I WILL BE MARKING BRAINLIEST)
Answers
1) <
2) >
3) =
4) >
5) =
6)
Answer:
1) <
2) >
3) =
4) >
5) =
6)<
In an arboretum, the heights of five trees were 21 feet, 31 feet, 36 feet, 28 feet,
and 26 feet. What would be the height of the sixth tree if the mean height of the
six trees was 28 feet?
Answers
Answer:
26
Step-by-step explanation:
(21+31+36+28+26+x)/6=28
21+31+36+28+26+x= 28×6
142+x =168
x=168-142
x=26
Pls help me find v,w,x,y, and z pls help me I will mark u brainlest
Answers
Answer:
v 39 degree
z 47 degree
x 94 degree
sry don't know about w and y....
A classroom had 35 glue sticks.If the ratio of glue sticks to glue bottles was 5:2 how many glue bottles did the classroom have
Answers
Answer:
14
Step-by-step explanation:
35÷5=7
2×7=14
hope this helps
Answer:
14
Step-by-step explanation:
35÷5=7
7×2= 14
ya welcome
A 27 meter piece is of string stretched the top of 25 meter flagpole to the ground.How far is the base of the flagpole from the end of the piece of string?
Answers
Answer:
base = 10.2 meters
Step-by-step explanation:
using the Pythagorean theorem:
base² = 27² - 25² = = 729 - 625 = 104
base = 10.2 meters
Rob is saving to buy a new MP3 player. For every $12 he earns babysitting, he saves $9. On Saturday, Rob earned $36 babysitting. How much money did he save?
Answers
Answer:
$27
Step-by-step explanation:
Set up a proportion where x is the amount of money he saved:
[tex]\frac{12}{9}[/tex] = [tex]\frac{36}{x}[/tex]
Cross multiply and solve for x:
12x = 324
x = 27
So, he saved $27
HELP ME PLEASE I DONT GET ITTT
Answers
Answer:
B. Getting Faster
Step-by-step explanation:
A. is incorrect, if it was getting slower it would be going the opposite direction.
C. is incorrect, it is not moving at a constant speed, the speed changes a couple times but still gets faster.
D. is incorrect, because it is very clearly moving. If it wasn't moving the line would be flat.
one number is nine than another number. if the sum of the numbers is 65, find both numbers.
Answers
Answer:
28 and 37
Split 65 into 2 numbers
30 and 35
Then add and subtract till you get your answer
29 and 36
28 and 37
Which graph represents the conic 4x2 – 16x – 9y2 + 54y – 101 = 0?
It is the forth graph.
Answers
Answer:
The Fourth Graph / D
Step-by-step explanation:
Took The Quiz
Answer:
fourth graph
Step-by-step explanation:
^u^
Chris got 28 out of 35 correct in his test.
What fraction of the marks did he get correct?
Answers
Answer:
4/5
Step-by-step explanation:
A balance scale shows that 12 + 5 = 17. If five units are removed from one side, what needs to be done to the other side to keep the scale in balance?
Answers
What is 25=10+w. I need it ASAP ROCKY
Answers
Answer:
W=25-10=15..........
The dimensions of a lawn shaped like a trapezoid are given in meters. 18 meters, 4 meters, 5 meters, 12 meters. What is the area of the lawn in square meters?
Answers
Answer:
the area of the lawn in square meters is 60 meters^2
Step-by-step explanation:
The computation of the area of the lawn in square meters is shown below
= 12 meters × 5 meters
= 60 meters ^2
Here we multiply the two sides so that the area of the lawn could be come
Hence, the area of the lawn in square meters is 60 meters^2
Chau and Maria each opened a savings account today. Chau opened his account with a starting amount of $510, and he is going to put in $80 per month. Maria opened her account with a starting amount of $590 and she is going to put in $60 per month
Answers
Elyssa bought a rectangular aquarium . The measurements , in feet (ft) , are shown below. How much water will it take to fill the aquarium?
Answers
Answer: The answer is 34 13/20.
Step-by-step explanation:
I did it and was correct for me! Hope it helps ❤️
Answer:
34 13/20
Step-by-step explanation:
Which one should I pick?
Answers
Answer:
x = 7, y = 16
Step-by-step explanation:
From the diagram shown;
2x+5 = x+12
collect the like terms
2x-x = 12 - 5
x = 7
Similarly, y - 4 = x+5
y-4 = 7+5
y - 4 = 12
y - 12+4
y = 16
hence x = 7, y = 16
It is estimated that 78% of drivers use their turn signal. Part A: What is the probability that exactly 3 drivers use their turn signal if a police officer pulls over five drivers? (5 points) Part B: What is the probability the next driver using their turn signal that the police officer pulls over if the fifth driver? (5 points) (10 points)
Answers
Answer:
0.2297 ;
78% of drivers use their turn signal. Part A: What is the probability that exactly 3 drivers use their turn signal if a police officer pulls over five drivers? (5 points) Part B: What is the probability the next driver using their turn signal that the police officer pulls over if the fifth driver? (5 points) (10 points)
Step-by-step explanation:
p = 0.78
1 - p = 0.22
P(x = 3)
Using the binomial distribution formula :
P(x =x) = nCx * p^x * (1 - p)^(n - x)
P(x = 3) = 5C3 * 0.78^3 * 0.22^2
P(x = 3) = 10 * 0.78^3 * 0.22^2
P(x = 3) = 0.2297
h+37=1
Whats the answer of H?
Answers
Answer:
h = -36
Step-by-step explanation:
-36 + 37 = 1 can be rewritten as 37 - 36 = 1. Since both equations are true, we have found the answer and checked it.
-36 is your answer.
Hope this helps. Have a nice day.
Eva has a coupon for an oil change with synthetic oil for $59.95. She can buy 5 quarts of synthetic oil, which is what her car needs, for $26.54 and an oil filter for $6.47. How much can she save by doing the oil change herself?
$79.22
$139.17
$59.95
$32.92
$26.94
Answers
Answer:
$26.94
.................
A floor tile is shaped like a regular hexagon. The side lengths are 4 cm and the apothem 2√3 cm.
What is the area of the hexagonal floor tile?
Enter your answer as a decimal to the nearest hundredth.
area = cm2
Answers
Answer:
Area of regular hexagon[tex] \approx 41.57 \: {cm}^{2} [/tex]
Step-by-step explanation:
Area of regular hexagon
[tex] = 6 \times area \: of \: one \: triangle \\ \\ = 6 \times \frac{1}{2} \times 4 \times 2 \sqrt{3} \\ \\ = 24 \sqrt{3} \\ \\ = 41.5692194 \: {cm}^{2} \\ \\ \approx 41.57 \: {cm}^{2} [/tex]
Answer:
41.57
Step-by-step explanation:
took the test
There are 8 red, 4 green and 12 yellow balls in a box. If you choose one ball from the box, what is the probability that it will be a yellow ball?
Answers
Answer:
50% percent chance the ball will be yellow
Step-by-step explanation:
Find the amount of all the balls-24 and the amount of yellow balls-12
Then divide the number of yellow balls by the number of total balls.
12÷24=0.5
0.5=50%
Determine if the two triangles are congruent. If they are, state how you know.
Answers
Answer:
No, these 2 triangles are not congruent as not even 1 side in the triangles has been marked as equal.
Hence, the answer is f) not enough information.
For each equation, find a value for x that makes the equation true.
4x/3x=10/3
Answers
Answer:
No Solution
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