Let the width be x cm
Length = 2x cm
Perimeter = 2 ( x + 2x) = 42
3x = 21
x = 7 cm
ANSWER Length 14cm , Width = 7cm
In each of the following scenarios, determine if the data are paired.
1. We would like to know if Intel's stock and Southwest Airlines' stock have similar rates of return. To find out, we take a random sample of 50 days for Intel's stock and another random sample of 50 days for Southwest's stock.
a. Paired
b. Not Paired
2. We randomly sample 50 items from Target stores and note the price for each. Then we visit Walmart and collect the price for each of those same 50 items.
a. Paired
b. Not Paired
3. A school board would like to determine whether there is a difference in average SAT scores for students at one high school versus another high school in the district. To check, they take a simple random sample of 100 students from each high school.
a. Paired
b. Not Paired
Answer:
1. Can be Paired or Not Paired
2. Paired
3. Not Paired
Step-by-step explanation:
Two sets of observations are paired if each observation in one set has a special correspondence or connection with exactly one observation in the other data set.
1. Can be Paired or Not paired
Reason -
We might look at testing the difference of means using a two sample t-test. However, we may also try running a paired t-test.
But its used in cases where the observations are usually from the same populations at different times or through different sources etc.
Hence can't conclude that it is paired or not paired.
2. Paired
Reason -
Each record is a price of the same item from different stores.
3. Not paired
Reason -
This is again a case of testing the difference of means of two-samples (2 independent samples precisely) that are not paired.
1. Can't conclude paired or not paired
2. Paired
3. Not Paired
What do you mean by paired or unpaired?Two sets of observations are said to be paired if each observation in one data set has a specific connection with exactly one observation in the other data set otherwise it is unpaired.
1. Can't conclude paired or not paired because It may look at testing the difference of means using a two-sample test, But it's used in cases where the observations are from the same populations at different times or through various sources, etc.
2. Paired because each item is the price of the same item from different stores.
3. Not paired because in this case of testing the difference of means of two independent samples that are not paired.
Learn more about paired and unpaired:
https://brainly.com/question/15182074
escribe en forma de potencia y encuentra el valor
((-9)²)³
Answer:
Step-by-step explanation:
Answer:
531441
Step-by-step explanation:
using multiplicative law of indices
2 by 3 Is 6
so, -9⁶=531441
Find the sum of the first 36 terms of the following series, to the nearest integer.
13, 19, 25,
Answer: 15
Step-by-step explanation:
Answer:
i concluded that it's 4248
I WILL REWARD BRAINLIEST TO CORRECT ANSWER!!!
Can you help me thanks!
Answer:
multiply
Step-by-step explanation:
You have to multiply.
Example:
[tex] {5}^{2} [/tex]
You have to multiply 5x5 because it says
[tex] {5}^{2} [/tex]
Hurry this is due in 8 minutes
A 1/20
B 1
C 10%
Answer: A, 1/20
Step-by-step explanation: There is only one Ryan of 20 students.
Express 0.009 as a percentage
0.009 = 0.9%
The answer is 0.9%
How can I find f?
Please help if you can!
Answer:
63°
Step-by-step explanation:
i=62° f+i=125° 125-62=63
a country has a national debt of $6x10^12. if the population of the country is 300 million people, how much will it be for every man, women, and child in the country?
Answer:
$20000
Step-by-step explanation:
6*10^12/ 300 million
HELP ASAP
if dy/dx = 2 - y, and if y = 1 when x = 1, then y = ??? PHOTO ATTACHED
Answer:
y=2-e^(1-x)
Step-by-step explanation:
This can be solved by separating the variables.
dy/dx=2-y
Multiply both sides by dx
Divide 2-y on both sides
dy/(2-y)=dx
Integrate both sides
-ln|2-y|=x+c
Multiply both sides by -1
ln|2-y|=-x-c
Equivalent logarithm form
2-y=e^(-x-c)
Minus 2 on both sides
-y=e^(-x-c)-2
Multiply both sides by -1
y=-e^(-x-c)+2
The ordered pair (1,1) belongs to the curve so we have
(I'm going to use this earlier form -ln|2-y|=x+c)
-ln|2-1|=1+c
-ln|1|=1+c
-0=1+c
0=1+c
Minus 1 on both sides
-1=c
Answer:
y=-e^(-x-(-1))+2
Or
y=-e^(-x+1)+2
Or
y=2-e^(1-x)
How do I answer this and I need explanation pls
Answer:
65 degrees
Step-by-step explanation:
1) Find the value of x
The sum of all the interior angles of a triangle is always 180 degrees. Knowing this, we can construct the following equation:
[tex](2x-5)+(115-x)+x=180[/tex]
Open up the parentheses
[tex]2x-5+115-x+x=180[/tex]
The two x's cancel out
[tex]2x-5+115=180\\2x+110=180[/tex]
Subtract 110 from both sides
[tex]2x+110-110=180-110\\2x=70[/tex]
Divide both sides by 2
[tex]2x/2=70/2\\x=35[/tex]
Therefore, x is equal to 35.
2) Find the value of <C
[tex]C=2x-5[/tex]
Plug 35 into the equation as x
[tex]C=2(35)-5\\C=70-5\\C=65[/tex]
Therefore, the value of angle C is 65 degrees.
I hope this helps!
Solve for c: 60= 15c
Answer:
c=4
Step-by-step explanation:
Answer:
C=4.
Step-by-step explanation:
You divide 15c and 60 by 15 getting you c=4.
1 point
8. The dot plot below represents the number of dollars in allowance that
students receive each week in Mrs. Jimenez's class. What is the median
amount of allowance?
1...
+
2
+
4
+
12
+
14.
O
6
8
10
16
DOLLARS OF ALLOWANCE EACH WEEK
Answer:
6
Step-by-step explanation:
i am not sure but i think its right sorry if you get it wrong
Pls help asap help I’ll mark brainleast
Answer:
C
Step-by-step explanation:
1/2bh is the formula for the area of a triangle
multiply the base and the height
9 x 19 = 171
then multiply by 1/2 or divide by 2
171/2 = 85.5 or 85 1/2
A quiz has 5 true-false questions and 3 multiple choice questions with 4 options each. How many possible ways are there to answer the 8 questions?
a.
48
c.
4024
b.
2024
d.
2048
Answer:
The correct answer is D
Step-by-step explanation:
the dude above me made a small typo, but they are right
The picture is my proof
have a nice day! :)
What is the equation for f(x)
Answer:
it's a black image theres no line
Ron has 10 marbles that are the same size and
shape in a bag. Of these, 4 are blue and 6 are
green. He selects 2 marbles, one after the other,
and DOES NOT REPLACE the first marble. What is
the probability that he will select 2 green marbles?
Answer:
??
Step-by-step explanation:
As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month. Do the Cincinnati employees travel the same distance to work, on average, as the Pittsburgh employees
Answer:
Both groups of Employees do not travel the same distance to work hence we will reject the Null hypothesis
Step-by-step explanation:
40 Pittsburgh employees mean travel time = 370 miles
35 Cincinnati employees mean travel time = 380 miles
Both groups of Employees do not travel the same distance to work hence we will reject the Null hypothesis
H0 : μ1 = μ2
H1 : μ1 ≠ μ2
mean = total distance / Number of employees
For Pittsburgh
370 = x / 40
x = 370 * 40 = 14,800 miles
For Cincinnati
380 = y / 35
y = 380 * 35 = 13,300 miles
can someone do my last question and actually try it
Answer:
What's the question?
Step-by-step explanation:
what is order of operations and why is it important
Answer:
PEMDAS
Step-by-step explanation:
The order of operations is the order in which you solve an equation to find the correct answer. This is very important because randomly solving parts of an equation without using the order of operations will result in the wrong answer. The order of operations is PEMDAS which stands for: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
Example:
[tex](2*2)^{2}+6/3-1[/tex]
Using PEMDAS to solve this equation we get 17 as our answer. However, if we solve it in order of how it appears we end up with 19/3 or 6.33, which is a very different answer.
Name
Austin - 4-12-21
Whole Numbers and Fractions
In 1-6, write an equivalent fraction for each whole number,
1. 6
2. 8
3. 4
4. 3
5. 1
Each one is just that whole number over one.
For instance for the number 7 it would be 7/1.
Hope this helps!
How much lemon juice must be added to 4 litres of water to make a lemonade
solution that contains 20% lemon juice?
It takes at 45 minutes to complete his science homework. It takes him 2/3 as long to complete his math homework. How long does it take add to complete his math homework?
Answer:
30 minutes
Step-by-step explanation:
45 = 15 +15 +15 (3 parts of 15)
2 parts of 15 = 30
You are the coach of the girls’ basketball team at a local middle school. It is the fifth game of the season, the game is tied, and there are only 5 seconds left on the clock. The referee has called a technical foul on the other team. You get to choose any one of your girls to take the shot. Basing your decision only on on their free-throw shooting thus far this season, whom would you pick, Becky or Rachel? Becky has made 8 of 12 free throws. Rachel has made 15 of 20 free throws.
Answer: Becky I guess
Step-by-step explanation:
The slopes of perpendicular lines are
A. negative reciprocals
B. opposites
C. reciprocals
O D. identical
Is urgent no links
Answer:
A. Negative reciprocals
Solve for x 4(x+9)= 3(2x - 7)
Answer: X= 57/2
Hope this helps!
Answer:
x = 28.5
Step-by-step explanation:
1. Write the equation
4(x+9) = 3(2x - 7)
2. Distribute
4x + 36 = 6x - 21
3. -4x from both sides
36 = 2x - 21
4. +21 on both sides
57 = 2x
5. Divide 2 on both sides
x = 28.5
Help extra points and mark brainlist
Answer:
Median is 7
Step-by-step explanation:
Give me brainllest
Based on the scatter plot above, describe the relationship between the moves and the score of the Solitaire game.
Answer:
The moves and score have an inverse linear relationship. The more moves the person makes, the lower their score. The less moves the person makes, the lower their score.
Step-by-step explanation:
I NOW HAVE 690 PTS ALSO PLEASE HELP WITH MY MOST RECENT QUESTION
Answer:
Okay
Step-by-step explanation:
I'll see if I know the answer
ILL GIVE THE BRAINLIEST pls help me with this question EVERYTHING IS IN THE PICTURE PLS HELP DUE TODAY IF YOU PUT A WRONG ANSWER ILL REPORT YOU FASTER THAN ASSIGMENT IS DUE
Answer:
90mm cubed
Step-by-step explanation:
Answer:
90 mm³
Step-by-step explanation:
V = area of base multiplied by height
base in this example is the triangle, which has an area of 15/2 or 7.5
height = 12
12 x 7.5 = 90
