2 tables. Table 1 is titled Population data with entries 2, 4, 8, 5, 1, 1, 10, 5, 4, 2, 3, 3. Table 2 is titled Sample data with entries 4, 1, 5, 3.
Compare the mean of the population with the mean of a sample.
The mean of the population is
.
The mean of the sample is
.
The difference between the mean of the sample and the mean of the population is
.
Answers
Answer:
4
3.25
.75
Step-by-step explanation:
I got it right on the test
Answer:
1. 4(c)
2. 3.25(A)
3. 0.75(c)
Step-by-step explanation:
your welcome
Related Questions
four students are each trying to raise the same amount of money for a class trip. The table below shows how much of each student’s goal has been met.
Which list shows the numbers in the table in order from least to greatest?
Answers
Answer: the third answer is correct
Step-by-step explanation:
5/8=62%
2/3=66%
what is " 10 > 7 + x = ?
(Please show work)
Answers
Answer: x=3
Step-by-step explanation: 10>x+7 : subtract 7 from both sides 10-7+3 and 7-7=0 so 3>x so x=3
Answer: x = 3 (hope you like it)
Mike sold half of his comic books and then bought 9 more. He now has 16. How many did he begin with?
Answers
Answer:14
Step-by-step explanation:
Answer:
Mike had 14 to begin with.
Step-by-step explanation:
16 - 9 = 7
7 x 2 = 14
14 / 2 = 7
9 + 7 = 16
A function with an input of 1 has and output of 3. Which of the following could NOT be the function equation?
1. y= 3x
2. y= x+2
3. y= 4x-3
4. y= 4x-1
Answers
Answer:
The answer is 3
y=4x-3❌
Step-by-step explanation:
1)y=3x=3(1)=3✅
2)y=x+2=1+2=3✅
3)y=4x-3=4-3=1❌
4)y=4x-1=4-1=3✅
Please i need help!!
Answers
Answer:
Option B is correct
Step-by-step explanation:
because when you compare the table with graph you can understand easily.
help me pls, thanks ^^
Answers
Answer:
As the time increases, the distance from the floor decreases by 40 cm per second. You find 40 by taking (6,1140) and (9,1020). The slope formula is y2 - y1 over x2- x1. Plug in the variables and you get (1020-1140)/(9-6)= -120/3= -40.
Step-by-step explanation:
Which expression is equivalent to 16. 8−18. 6
A. 18. 6-16. 8
B. 16. 8-(-18. 6)
C. -18. 6+(-16. 8)
D. 16. 8+(-18. 6)
Answers
Answer: Answer is D
Step-by-step explanation:
Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Answers
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation:
A simple interest loan of
$4,000 was repaid at the end
of 3 years with a check for
$4,972. What annual rate of
interest was charged?
Answers
What is 35% of 80?
Please answer this within half an hour, Thanks!! :D
Answers
Answer:
28
Step-by-step explanation:
35÷100×80 which will give you 28 as the answer.
Answer:
the answer is 28
Step-by-step explanation:
to get this, you would change 35% to a decimal.
to do this you would move the decimal to the right 2 times ( 35.0-----> 0.35)
then, you would multiply 0.35 by 80, and you would get 28
hope this helped!
In the data set below, what is the mode?
15, 21, 26, 25, 21, 23, 28, 21, 25, 23
Answers
Answer:
21
Step-by-step explanation:
mode is the value that occurs frequently
data
15, 21, 26, 25, 21, 23, 28, 21, 25, 23
sort from the smallest
15, 21, 21, 21, 23, 23, 25, 25, 26, 28
15 = 1
21 = 3
26 = 1
25 = 2
23 = 2
28 = 1
the mode is 21 (appear 3 times)
A bag contains 8 black marbles, 16 white marbles, 14 red marbles, and 10 green marbles. A marble is drawn at random from the bag.
What is the probability that the marble drawn will not be white?
A. 1/3
B. 2/3
C. 3/4
D. 15/ 16
Answers
Answer:
B. 2/3
Step-by-step explanation:
Total marbles: 48
White marbles: 16
48-16=32
The fraction is: 32/48 simplified is 2/3
We have a total of 48 marbles. 16 of them are white.
48-16=32
32/48 simplifies to 2/3
Graph each question
y = 2x + 0.5
y = 0.5x + 1
Answers
Answer:
y = 1.5
y = 4.5
Step-by-step explanation:
Y=4.5
Hope I helpppp!
Sanderson is having trouble with his assignment. His shown work is as follows:− 8/9 div 9/8 = − 89 × 98 = − 72/72 = −1 v\However, his answer does not match the answer that his teacher gives him.
Complete the description of Sanderson's mistake. Find the correct answer.
He forgot to multiply by the
(select)
, and instead just multiplied by the
(select)
that was in the denominator. The answer should look like this:
− 8/9 div 9/8 = - 8/9 × 8/9 =
need this for final exams
Answers
Answer:
He forgot to flip the second fraction.
Step-by-step explanation:
He has:
−8/9 ÷ 9/8 = −8/9 × 9/8 = −72/72 = −1
He made a mistake. When you change a division to a multiplication, you must use the reciprocal of the second fraction. You have to flipt the second fraction. He did not flip it.
This is correct:
−8/9 ÷ 9/8 = −8/9 × 8/9 = −64/81
For a chess tournament, there needs to be 3 teachers for every 18 students. If there are 11 teachers, how many students can go to the chess tournament?
What is the constant of proportionality? You can think about this as 18 is how many times as much as 3.
Number of Teachers Number of Students
3
×
18
11
Answers
Step-by-step explanation:
Solution:
Given,
3 Teacher = 18 students
11 Teacher = X students ( let no. of student be x)
Now,
1 teacher = 18/3
= 6 students
So, If 1 teacher is there then 6 students can play chess.
again,
No. of teacher = 11
No.of students = X
Now,
X= No.of teacher × No.of students for 1 teacher.
= 11 × 6
= 66
So , 11 Teachers can handle 66 students.
There propotion is 11/66 = 1/6 = 1:6.
Answer:
1:6 is the answer
Step-by-step explanation:
A tire has a circumference of approximately 81.64 inches. Use π = 3.14 when solving.
What is the diameter of the tire?
d= 13 in.
d = 26 in.
d = 52 in.
d = 6.5 in.
Answers
help me please
6(9 + 5x) = 54 +
Answers
Hi
to progress in math, you must : know by heart the rules and formulas then train.
rule : a ( b+c ) = a*b + a*c.
this propertie is call distributivity .
so we have : 6 ( 9+5X)
here : a = 6
b = 9
c = 5X
so 6 ( 9+5X) = ?
I let you have a shot. Ask in comments section if you are stuck. But try first !
Answer:
1) rearrange terms:
6(9 + 5x) = 54
6(5x + 9) = 54
2) Distribution :
6(5x + 9) = 54
30x + 54= 54
3) subtract 54 from both side:
30x + 54 = 54
30x + 54 - 54 = 54 - 54
4) Simplify: subtract the numbers
30x = 0
5) Divide both side of the equation by the same term:
30x = 0
30x√30 = 0√30
6) Simplify: cancel term that are in the both numerator and denominator
x = O√30
solution :
x = 0]
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
Answers
Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?
Answers
Step-by-step explanation:
Let's assume the amount Mackey initially invested in the 6% account is x dollars.
According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.
The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.
The total interest earned in the year is given as $737.50, so we can set up the equation:
0.06x + 0.085(x + $1000) = $737.50
Simplifying the equation:
0.06x + 0.085x + 0.085($1000) = $737.50
Combining like terms:
0.145x + $85 = $737.50
Subtracting $85 from both sides:
0.145x = $737.50 - $85
0.145x = $652.50
Dividing both sides by 0.145:
x = $652.50 / 0.145
x ≈ $4500
Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.
$4500
$4500
$4500
$4500
4. Chris and Keith went to a carnival. Chris started with 80 tickets and spent x tickets at the carnival, Keith started with 140 tickets and spent 2x tickets at the carnival. At the end of the night, they had the same number of tickets left over. How many tickets did Chris spend at the carnival?
Answers
Answer: x=20
Step-by-step explanation:
3x+80=140
3x=60
x=20
Answer: Chris spent 60 tickets at the carnival.
Step-by-step explanation:
At the end of the night, both Chris and Keith had the same amount of tickets, so:
80 - x = 140 - 2x
Now, solve the equation. Start by bringing the -2x to the left side.
80 - x + 2x = 140
Bring the 80 to the right side so the variables are isolated.
-x + 2x = 60
Add like terms.
x = 60
Check the work.
Chris had 80, spent 60, so had 20 left. --> 80 - 60 = 20
Keith had 140, spent 120 (60 *2), so also had 20 left. --> 140 - 120 = 20
So, Chris spent 60 tickets at the carnival.
Can someone help ???
Answers
Answer:
The answer is 222 miles
Step-by-step explanation:
222
Sam has a deck that is shaped like a triangle with a base of 18 feet and a height of 7 feet. He plans to build a 2:5 scaled version of the deck next to his horse's water trough.
Part A: What are the dimensions of the new deck, in feet? Show every step of your work. (4 points)
Part B: What is the area of the original deck and the new deck, in square feet? Show every step of your work. (4 points)
Part C: Compare the ratio of the areas to the scale factor. Show every step of your work. (4 points)
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
6
Step-by-step explanation:
18-2.5+7 there s your helllppppppppppp
New base = 18 x 2/5 = 7.2 feet
New height = 7 x 2/5 = 2.8 feet
Therefore, the dimensions of the new deck are 7.2 feet for the base and 2.8 feet for the height.
Part B: To find the area of the original deck, we can use the formula for the area of a triangle, which is:
Area = (1/2) x base x height
Area = (1/2) x 18 x 7 = 63 square feet
To find the area of the new deck, we can use the same formula and plug in the new dimensions:
Area = (1/2) x 7.2 x 2.8 = 11.88 square feet
Therefore, the area of the original deck is 63 square feet and the area of the new deck is 11.88 square feet.
Part C: The ratio of the areas is:
63/11.88 = 5.303
The scale factor is:
2/5 = 0.4
To compare the ratio of the areas to the scale factor, we can divide the ratio of the areas by the scale factor:
5.303/0.4 = 13.2575
Therefore, the ratio of the areas is 13.2575 times the scale factor.
Uhm read the highlighted. I already answered the first one (as you can tell its C) I just need help with the last one :D
Answers
Answer:
He added all the numbers as they were a decimal number, with the kilometers traveled by Bus and Car being 2 to the left than where it should have been.
How I found it:
Converting 7 and 2.3 into a decimal with the decimal place two to the left.
7 becomes 0.07
2.3 becomes 0.23
I added this to the kilometers traveled by train(which is 19.955km).
19.955km + 0.023 + 0.07 = 19.985
19.985 being the value for answer A.
Hope that helps :)
HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
360 = 90+6x
270 = 6x
x = 45
Hello !
\(\widehat{LMO} +\widehat{MON} + 5x = 360°\)
\(90 °+ x + 5x = 360°\)
\(90° + 6x = 360°\)
\(6x = 360 ° - 90°\)
\(6x = 270°\)
\(x = \frac{270}{6} °\)
\(x = 45°\)
To find the volume of a rectangular prism you multiply the 3 dimensions, length x width x height. What combination of numbers will give me a volume of 17?
Answers
Answer:
1, 1, 17
Step-by-step explanation:
17 is a prime number. This means the only factors are 1, and 17. This means that since only 17, and 1 multiply to 17, to get a volume of 17 you can only use 1, and 17 (1, 1, and 17)
On Friday, Jade washed 10 vehicles in 4 hours. The next day She washed 15 vehicles in 6 hours. Is the number of vehicles she washed proportional to the time it took her to wash them? Explain.
Answers
Answer:
no its non-prop
Step-by-step explanation:
because first if she washed 10 vehicles in 4hours then she washed 15 in 6 hrs the next day then thats non prop. hope this helps ! :)
10 cars divided by 4 hours=2.5 cars per hour
15 cars divided by 6 hours=2.5 cars per hour
So your answer would be yes, as she took the same number of cars per hour
Use the best-fit line below to predict the value of y when x = 7
Answers
Answer:
the answer is 6 because when x=7 on the line it is also equal to 6 on the y axis
ASP PLZ
Select all the correct functions. Identify all the functions that have a greater rate of change than the function represented in the graph. y=2x+7 y=1.5x+1 y=0.5x-5 y=2.5x-20 y=3x+12 y=x-7
Answers
Answer: y=3x+12
Step-by-step explanation: because 12 has more value to it than the others
What is the greatest common factor, or GCF, of 120 and 68?
Answers
Answer: 4
Step-by-step explanation:
What i do is i make a row by row of the multiples 1-10
and i check off after to see which is right
Answer:
4
Step-by-step explanation:
6.7 more than the quantity x divided by 2.1 is greater than or equal to b.
How is this word sentence written as an algebraic inequality?
Answers
Answer:
6.7 + x/2.7 ≥ b
Step-by-step explanation:
(6.7) (more) (than the quantity x divided by 2.1) (is greater than or equal to) (b)
6.7 + x / 2.1 ≥ b
6.7 + x/2.7 ≥ b
Answer:what is the anwser
Step-by-step explanation: