30 random samples of high school students were asked if they played a sport for their high school. Each sample was 20 students. The dot plot represents the 30 random sample proportions.
Choose ALL that are correct.
A) A sample proportion of 0.20 means that 4 of 20 high school students responded that they play a sport.
B) Based on the sample distribution, the best prediction for the proportion of all high school students that play a sport is 0.10.
C) The mean of the 30 sample proportions calculated to the nearest hundredth is 0.16.
D) The shape of the sample distribution is fairly symmetrical.
Answers
Answer: a. This option is correct
b. This will be true only if we take the mode as the best representative value
c. This is a not correct choice
d. This option is correct
Step-by-step explanation: Took the test on USATest Prep
Related Questions
2.) Solve:
-24 - 2m = -4m - 8(m + 8)
Answers
Answer:
m= - 4
Step-by-step explanation:
Answer:
m= -4
Step-by-step explanation:
Darnell and Lance are both saving money. Darnell currently has $40 and is saving $5 each week. Lance has $25 and is saving $8 each week.
What week will Darnell and Lance have the same amount of money?
How much will each boy have when they have the same amount of money?
If both boys continue saving at this rate, who will have $100 first
Answers
Answer:
the answer is 1,203 because your finding the unit price.
Step-by-step explanation:
blonde or brunette? Explain why
(Its for my human interactions course so pls dont report it)
Answers
Answer:
imo i would go with brunette because i don't really like blondes. most ones ive met are annoying.
Step-by-step explanation:
Twice a first number decreased by a second number is 22. The first number increased by four times the second number is - 7.
Answers
Answer:
4
Step-by-step explanation:
What are the reasons for this Geometry Proof in order of occurrence?
Answers
If two angles are complementary and one angle is 48° what is the other angle
Answers
Answer:
Step-by-step explanation:
When two angles add to 90°
The heart rate of animals vary greatly a bat heart beats about 750times in a minute however,a large whale heart beats only about 22 time in a minute
Answers
Answer:
i don't know how to do this
Can someone solve this with the method of subtraction using addition please quick
Answers
Answer:1. X=2 y=4
2. X=2.5 y=3
3.x=0 y=-1
Step-by-step explanation:
1. 6x=12
x=2
replace
4+y=8
y=4
2.
8x=20
x=2.5
replace
5+3y=14
y=3
3.
-6y=6
y=-1
replace
x=0
The perimeter of an equilateral triangle is 63 inches. If the length of each side is (4x-3), find the value of x.
Answers
Answer:
The value of x is 6
Step-by-step explanation:
The perimeter of an equilateral triangle is P = 3 × S, where S is the length of each side
∵ The perimeter of an equilateral triangle is 63 inches
∴ P = 63 inches
→ By using the rule of the perimeter above
∵ P = 3 × S
→ Equate the right sides of P
∴ 3 × S = 63
→ Divide both sides by 3
∴ S = 21 inches
∴ The length of each side is 21 inches
∵ The length of each side is (4x - 3)
→ Equate (4x - 3) by the length of each side
∴ 4x - 3 = 21
→ Add 3 to both sides
∵ 4x - 3 + 3 = 21 + 3
∴ 4x = 24
→ Divide both sides by 4 to find x
∴ x = 6
∴ The value of x is 6
The area of a circle is 9π ft². What is the circumference, in feet? Express your answer in terms of \piπ. (pi)
Answers
Answer:
6π feet.
Step-by-step explanation:
The area = π r^2 = 9π
So r^2 = 9π/π = 9
r = 3 ft.
So the circumference = 2πr
= 2*π*3
= 6π feet.
The circumference of a circle with radius 3 feet is 6π feet.
What are the area and perimeter of a rectangle?We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.
We know the perimeter or circumference of a circle is 2πr and the area
is πr².
Given, The area of a circle is 9π ft².
Therefore, πr² = 9π.
r² = 9.
r = 3.
Now, we have a circle with a radius of 3 feet.
So, The circumference of the circle with radius 3 feet is,
= 2π×3 feet.
= 6π feet.
So, The circumference of the circle is 6π feet.
learn more about circles here :
https://brainly.com/question/29142813
#SPJ5
The heights of adult men are normally distributed with a mean of 69 inches and a standard deviation of 2.75 inches. What percentile does a man who is 72 inches fall?
Answers
Answer:
86.2%
Step-by-step explanation:
Given that:
Mean, m = 69 inches
Standard deviation. s = 2.75
Man who is 72 inches tall ; x = 72
Using the relation :
Zscore = (x - mean ) / standard deviation
Zscore = (72 - 69) / 2.75
Zscore = 3 / 2.75 = 1.09
Z = 1.09
P(Z < 1.09) = 0.862 (Z probability calculator)
0.862 * 100% = 86.2%
Write the equation of the line in slope-intercept that has passes through the points (-8,-11) and (10,-2).
Answers
Answer:
y = 0.5x-7
Step-by-step explanation:
First we need to find the slope so we use the formula y2 - y1 / x2 - x1 = m
The variable m will represent the slope or rate of change
-2 - (-11) / 10 - (-8) = m
Or
-2 + 11 / 10+8 = m
9/18 = m
0.5 = m
y = 0.5x+b
To find b replace the y and x variables
I will use 10 and -2
-2 = 0.5(10)+b
You should come out with -7 = b
eight hundred 35 thousandths as a decimal
Answers
Answer:
0.835
Step-by-step explanation:
Hope this helps and have a great day!!!
Answer:
800.035
Step-by-step explanation:
Paul gets $5 every week for doing his chores he is saving money to get a skateboard that cost $85 he has already saved $25 which equation describes the number of weeks that is with Paul to save enough money to buy the skateboard
Answers
Add 25 because he already saved that amount of money
5x because 5 is the amount of money he makes a week and x= number of weeks.
And =85 because that’s the total cost
To find the amount of weeks, just solve the equation
5x+25=85
5x=60
X=12 weeks
Hope it helps
solve pleaseeeeeeeeeeeeeeeeeeeeeeee
Answers
Answer:
I got this!
so basically what you do is do 129/6 which equals to 21.5
You just find the graph that says 21.5 which would be C
BRAINLIEST PLS
Answer: i would have helped but you didnt do enough Es sorry
Step-by-step explanation:
Write 4 x 3,569 in expanded form to show the place value of each digit. Then find the product.
(4 x
) + (
x 500) + (4 x
) + (4 x
)
Final product: =
Answers
The answer of the given equation is 14,276.
Given that,
There is two numbers i.e. 4 and 3,569.We need to find out the product of these two numbers.
Based on the above information, the calculation is as follows:
[tex]= 4\times 3569[/tex]
= 14,276
Therefore we can conclude that The answer of the given equation is 14,276.
Learn more: brainly.com/question/17429689
One day Akash walked 2/3 km from home to school .On his return he took another route which was 3/5 km long .How many km did Akash walk in all?
please answer in steps.
Answers
Answer:
Akash walked [tex]1\frac{4}{15}[/tex] kilometers in all.
Step-by-step explanation:
Given that:
Distance covered while walking to school = 2/3 km
Distance covered while walking back = 3/5 km
We will add the distance.
Total distance walked = [tex]\frac{2}{3}+\frac{3}{5}[/tex]
Total distance walked = [tex]\frac{10+9}{15}[/tex]
Total distance walked = [tex]\frac{19}{15}=1\frac{4}{15}\ km[/tex]
Hence,
Akash walked [tex]1\frac{4}{15}[/tex] kilometers in all.
what is the median of the following 9 numbers 23,15,32,27,19,22
Answers
22.5 i think but i have no idea good luck
The median of the following 9 numbers 23,15,32,27,19,22 is 22.5.
What is median?The median is the value that splits the mathematical numbers or expressions in the half. The median value is the middle number of data point. to find the median firstly arrange the data points in ascending order.
Arrange the data points from smallest to largest;
15, 19, 22, 23, 27, 32.
Total number of data points is 6. And 6 is the even number.
So median of even numbers of data points is average of two middle points.
And those numbers are 22 and 23.
Average of 22 and 23 is (22 + 23) / 2 = 22.5
Therefore the median is 22.5.
To learn more about the median;
https://brainly.com/question/28060453
#SPJ2
Please help this is due rn (picture is below)
Answers
If the sides are all doubled, they would each be 10cm instead of 5cm.
The perimeter of that would be 10 times 4 which equals 40.
So to fill out the five blanks:
1. Equal
2. 5 cm
3. Times two, I guess?
4. 10 cm
5. 40 cm
Hope this helps! Let me know if you’re unclear on anything :)
Answer:
1. Equal or adjacent
2. 5cm
3. Twice as many? Multiplied by 2?
4. 10 cm
5. 40 cm
Step-by-step explanation:
To find the exact side you have to take the perimeter and divide it with the amount of sides and so on
Ana starts work at 2:45pm and finshes work at 5:30pm .How much times does Ana spend working
Answers
Answer:
2 hours and 45 minutes
Step-by-step explanation:
you add the 15 and 30 and then add 2 hours.
Ana spent 2 hours and 45 minutes working.
What is Unitary Method?Unitary method is a technique used in mathematics to solve problems that involve proportional relationships. It involves finding a unit rate (i.e., a rate per unit) and using it to solve problems that involve different quantities of the same type of unit.
To find the amount of time Ana spent working, we need to subtract the starting time from the finishing time.
The starting time is 2:45 pm and the finishing time is 5:30 pm.
We can subtract the starting time from the finishing time as follows:
5:30 pm
2:45 pm
2:45 pm
So, Ana spent 2 hours and 45 minutes working.
Learn more about Unitary Method here:
https://brainly.com/question/22056199
#SPJ2
Rick bought 3 shirts for $18.75 each, 2 pair of socks for $3.99 a pair, and a pair of slacks for $45.00. The
sales tax rate is 6.75%. How much did he pay?
Answers
Answer:
3 shirt=3×$18.75
=56.25
2 pair shocks =3.99×2
=8
1 pair slacks=45.00
total=109.25
tax=6.75% then;
109.25+6.25%×109.25
109.25+6.25/100×109.25
109.25+0.0625×109.25
109.25+6.28
116.07
Help me
Write the equation for this graph in the form y=mx+b
Answers
Answer: y = 2x + 50
Step-by-step explanation:
first find the slope (m):
slope = rise/run = y1-y2/x1-x2
(1,52); (2,54)
slope = (54-52)/(2-1) = 2/1 = 2; m = 2
now since we have the slope and a point, we will put it into point-slope form:
y = m(x - x1) + y1
y = 2(x - 3) + 56
y = 2x - 6 + 56
y = 2x + 50
Next week the store is going to reduce the price from $42 to $31.50. Calculate what percent the sale price is of retail price.
Answers
Answer:
13.23 is 31.50 percent of 42 and the price they dropped down was $10.5
Step-by-step explanation:
hope this helps pls mark me as brainliest! :)
Answer:
10.5
Step-by-step explanation:
CUZ I NO
what was the first commercial photography process
Answers
Because I have it right there
Here is a base-ten diagram that represents 1.13. Use the diagram to find 1.13−0.46.
Answers
Answer:
0.67
Step-by-step explanation:
The trainers at Atlantis Aquarium perform shows about sea life. Yesterday, they performed 4 shows in 2 hours. Today, they will perform 6 shows. If they perform shows at the same rate, how many hours will the trainers spend performing shows today?
Answers
Answer:
3 hours
Step-by-step explanation:
Number of shows : Time taken
= 4 : 2
Today, they will perform 6 shows.
Number of shows : Time taken
= 6 : x
Equate both ratios to find x
4 : 2 = 6 : x
4/2 = 6/x
Cross product
4 * x = 2 * 6
4x = 12
x = 12/4
x = 3 hours
The trainers will spend 3 hours performing shows today
Answer:
3 hours
Step-by-step explanation:
If lines AB and CB are parallel which of the following statements are true check all that apply
Answers
Answer:
Certainly B
Step-by-step explanation:
I'm not sure about C and E. A and D are wrong for sure--parallel ≠ perpendicular.
Answer: B and E are the answers
Step-by-step explanation:
Solve x/2-8=y for x
PLEASE HELP
Answers
Answer:
I do not know what you mean by the way
Justin is painting one of his living room walls gold. The area of the square wall is 85 ft2. Which measurement is closest to the side length of this wall in feet?
it's not 21 apparently
Answers
Answer:
The answer is 9.2 or just 9
The degree of the polynomial function below is ____
f(x)=-3x^5+4x-2
Answers
Answer:
the degree of the polynomial is 5
Answer:the
Step-by-step explanation:
