which sample is most likely to result in an unbiased survey
a. all students attending a homeroom class in the morning
b. all students going to football practice after school c. all male students
d. all students participating in the band
Answers
Answer:
a
Step-by-step explanation:
students are grouped together for briefing. thus resulting to unbiased survey.
The sample that is most likely to result in an unbiased survey is a. all students attending a homeroom class in the morning
How to determine the unbiased survey?To do this, we simply analyze the options one after the other
Option A: This is unbiased because all students are expected to be in the classroomOption B: This is biased because not all students are expected to be in the football practiceOption C: This is biased because the female students are excludedOption D: This is biased because not all students are expected to be participate in the bandHence, the sample that is most likely to result in an unbiased survey is a
Read more about survey at:
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Related Questions
Each line represents a proportional relationship. Write an equation for each line. Show your work.
A.
B.
Answers
Answer:
A 4x4 B 5x2
Step-by-step explanation:
check the points
The sum of three consecutive odd number is one hundred fifty-nine. what is the smallest of the three numbers?
pls show work and the check too.
Answers
n + 2 and n + 4 that their sum is 159.
n + (n + 2) + (n + 4) = 159
3n + 6 = 159
3n = 153
n = 51
And to check: 51 + 53 + 55 = 159
What number can replace the ? with that will make the left side of the equation equivalent to the right side. 4y + ? = 16y
Answers
Answer:
Step-by-step explanation: 4y + ? =16y
?= 12
12+4y=16y
Answer:
?=12
Step-by-step explanation:
4y+?=16y
?=12
12+4y=16y
CAN SOMEONE PLEASE DRAW DOTS WHERE THE ANSWER IS!! PLLSSS + BRAINLIEST
_____
One of the tables shows a proportional relationship.
Graph the line representing the proportional relationship from this table.
(answers in the pictures below) tyysmm
Answers
HELP ASAP! I DUE SOON!
Answers
Answer:
80
Step-by-step explanation:
Write and solve a compound inequality to model the possible length of the dog run.The inequality to model the possible length of the dog run is;. 100 ≤ 2.50x ≥ 200And the possible length of the dog run is 80ft.Minimum spending = $100Maximum spending = $200Cost per square feet = $2.50 letx = possible number of square feetThe inequality:100 ≤ 2.50x ≥ 200This means possible number of square feet constructed is greater than or equal to $100 or less than or equal to $200solve:100 ≤ 2.50x ≥ 200divide the inequality into 2100 ≤ 2.50xx ≤ 100/2.5x ≤ 40the other part:2.50x ≥ 200x ≥ 200/2.50x ≥ 80
Therefore,the possible length of the dog run is 80 feet
A linear function contains the following points.
What are the slope and y-intercept of this function?
Answers
Answer:
C!!! Only fraction and is negative!! hope this helps
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
im saying this might be right
JUST ANSWER PART B I REALLY NEED HELP
Answers
Answer: B
Step-by-step explanation: if not im sorry
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
Find the measure of each marked angle.
X degree= ? Degree
(X+50) Degree =? Degree
(180-3x) Degree =? Degree
(Simplify your answers. Type an integer or a fraction.)
Answers
Answer:
x degrees = 50 degrees.
x + 50 degrees = 50 + 50 = 100 degrees
(180 - 3x) degrees = (180 - 3*50) = 30 degrees.
Step-by-step explanation:
In a triangle, the sum of all inside angles must be 180 degrees.
In this question:
The inside angles are: x, x + 50 and 180 - 3x.
Then
x + x + 50 + 180 - 3x = 180
2x - 3x = -50
x = 50
So
x degrees = 50 degrees.
x + 50 degrees = 50 + 50 = 100 degrees
(180 - 3x) degrees = (180 - 3*50) = 30 degrees.
Suppose that y is directly proportional to x, and y = 112 when x = −16. What is the constant of proportionality?
A) −9
B) −7
C) 1/7
D) 7
Answers
Answer:
Step-by-step explanation:
-7
Answer:
H
Step-by-step explanation:
H
Roman is drawing fraction bars to model the difference of Five-eighths and One-third. What is the smallest number of equally sized pieces each fraction bar can be broken into to find the difference? 3 5 8 24 (dont answer asking if there is a picture because there is not thx) also not in fraction form
Answers
Answer:
24
Step-by-step explanation:
Ima put something here so it don’t get deleted
English is the predominant language spoken in Chile. Question 1 options: True False
whoever answers first gets the crown
Answers
Answer: The answer is false!
Step-by-step explanation: You may think its true but NO, its not true!
Answer: false
Step-by-step explanation:
the correct answer is a dialect of spanish, chilean spanish.
You have a pizza with diameter 12
2
3 in., and a square box that is 12.65 in. across. Write 12
2
3 as a decimal. Can you fit the pizza inside the box?
What is the decimal expansion for 12
2
3?
A.12.6
B.12.65
C.12.6
D.12.66
pls help me
Answers
Answer:
D is the right choice and no you cannot fit the pizza inside the box.
Step-by-step explanation:
D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.
Answer:
I believe the answer is D.
Step-by-step explanation:
Solve the inequality
2−5w≤−8
Answers
Answer:
The inequality for w is 2
The owners of a community center want to know more about their
members' activities. They collected data from six members who attend
regularly. The underlined entries indicate the members' favorite
activities. The owners wanted to answer the following question:
How much time do regular members spend at the community center each
week? Describe any computations you will need to do or statistical
measures you will need to find to answer the question.
Answers
Answer:
b
Step-by-step explanation:
can someone help? im not sure about this questons and its getting me so stressed out :( pls help :(
Answers
Answer:
Lets start:
Picture 1:-
1. Length of EH= 12cm
2. Angle G= 55 degrees
Picture 2:-
1. Scale factor= 1/4 (I'm not sure about this but this is what I think it is ;-;)
2. Value of y= 28 cm
Picture 3:- [Picture 3 is cropped so I'm guessing its the last one so imma answer those questions :D]
1. Scale factor= 5 (Again I'm not sure but its my best guess)
2. Value of z= 5
Picture 4:-
1. Scale factor= 4 (I'm pretty sure you know that my scale factor answers are guesses so yea ;-;)
2. Value of b= 12
Step-by-step explanation:
Since i can't add links in answers you can watch:
Similar figures
-By The Organic Chemistry Tutor
It'll help you understand how we solve these questions
Well anyways i hope this clears your concepts :D
Answer:
Step-by-step explanation:
EH is 12cm as the shape has been enlarged by scale factor two (all sides have been multiplied by 2).
Angle G remains the same at 55 degrees.
PART A
Scale factor for the triangle = 1/4
Value of y = 28cm
3) z = 5, scale factor = 5
SIMILAR RECTANGLES:
Scale factor = 4
Side b = 12cm
Hope these answers work out for you
PLEASEE HURRY AND HELP ME NO WRONG ANSWERS :( !!!!!!!!!!
LOOK AT THE IMAGES BELOW !!!!!!!!!!!!!
Answers
Answer:
Hello, for the first one, the answer should be (C) 3
The following transformation is an enlargement, meaning it would get bigger. Meaning that the scale factor increases by 3.
2x3=6
3x3=9
Therefore, the scale factor is (C) 3.
#5: The answer is (D): 4
Since this is an enlargement, we have to determine what ? x 6 = 24 is. Since the height of the photo is 6, we can conclude that 6 x 4 = 24.
Therefore, the answer is (D): 4
Hope this helped! Sorry for the complications <33
Please help me i really need help the first 2 pics go together
Answers
Answer:
i dont understand what were doing here?
Step-by-step explanation:
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Answers
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
(-5)(4.2) = -21
(-7)(-3) = 21
(4)(5) = 20
(2.5)(-9) = -22.5
So, the pairs of numbers and their products are as follows:
(-5)(4.2) = -21 matches with -21.
(-7)(-3) = 21 matches with 21.
(4)(5) = 20 matches with 20.
(2.5)(-9) = -22.5 matches with -22.5.
I hope this helps!
Translate the sentence into an equation. Nine times the sum of a number and 6 equals 8. Use the variable w for the unknown number.
Answers
Answer: 9 ( w + 6 )= 8
Step-by-step explanation:
"the sum of" usually indicates parentheses, I hope I helped!
Answer: 9(x+6)=8
Step-by-step explanation: The statement wants you to multiply 9 by the sum of a number and 6, which is equal to 8. The unknown number is going to be x, and we know that sum means the answer to an addition problem which means that x+6 will be multiplied by nine as the statement wants you to do. The statement also tells us that nine times the sum of a number and 6 is equal to 8. We have the first part of the problem solved all we need to do is set it equal to 8 which gives us the answer 9(x+6) = 8
Find the volumes to prove whether or not Alice is right.
Answers
Scott invests $1000 at a bank that offers 6% compounded annually. Write an equation to model the growth of the investment.
A) A = 10001.06t
B) A = 1000t1.06
C) A = 1000(.06)t
D) A = 1000(1.06)t
Answers
Answer:You can use A=P(1+(r/n))^(nt)
n=homany times it is compounded a year: 1 annually
t=time in years
r=rate: 6% or .06
A=Final Amount
P=principle amount
A=1000(1+(.06/1))^(1*t)
Step-by-step explanation:
hope this is correct
The equation that models the growth of investment is
\(A = 1000(1.06 )^t\)
Principal P= $1000
Rate of interest r= 6%
What is compound interest?Compound interest is interest on interest. compound interest is when you earn interest on both the money you've saved and the interest you earn.
The amount after t years when a principal P is compounded annually with an interest rate of r is given by:
\(A=P(1+\frac{r}{100} )^t\)
Put P = $1000, r=6% in above equation
\(A = 1000(1+\frac{6}{100} )^t\)
\(A = 1000(1.06 )^t\)
Therefore, The equation that models the growth of investment is
\(A = 1000(1.06 )^t\)
To get more about compound interest visit:
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For each diagram, describe a translation, rotation, or reflection that takes line ℓ to line ℓ′. Then plot and label A′ and B′, the images of A and B.
Please let me know if you cannot see the images.
Answers
The table shows the multiplication of two linear expressions. Select the correct reason for each step.
Reason 1:
Reason 2:
Reason 3:
Reason 4:
Answers
Answer:
Step-by-step explanation:
reason 1:
opening of brackets to solve the expression
reason 2:
in multiplication order is followed i.e. the number always lead the variable in the expression
reason 3:
for clarification brackets are added to multiply like terms i.e. numbers with numbers and variable with the variable
reason 4:
the solved and simplified expression is delivered as a result
7 divided by ? equals 56
Answers
7=56x
7/56=x
0.125=X
A recipe for making 3 dozen muffins requires 1 1/2 cups of flour. How many cups of flour are required to make 5 dozen of the same muffins? A) 2 cups B) 2 1/2 cups C) 3 cups D) 3 1/2 cups
Answers
Add the negatives.
+4 - 3 - 4 + 2 - 1
I just dont get it
Answers
Answer: -2
Step-by-step explanation:
since there are no multiplication you can simply go from left to right doing simple math. You start from a +4 that would be a positive 4, you subtract -3 so you get +1 then you subtract -4 and the result is -3 (negative 3) so now you are currently working with numbers lower than 0, adding +2 will make it -1 and finally you subtract for -1 and that will make it -2. Hope it's what u needed
How do you convert 8x + 16y = 5 into slope intercept form?
Answers
Answer:
y=5/16 - x/2
make y the subject of the formula and simplify afterwards
Rewrite the given equation as 4y= 8x-16 and divide by 4 on both sides to have y=2x-4. This is the required slope intercept form
Please help with this problem
Answers
2+2=
A.5
B.6
C.4
D: 2345678987654321
Answers
Answer:
It's clearly option D
.............
jk it A
Answer:
C. 4Step-by-step explanation:
2+2 = 4
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