Correlation may not always indicate causality shown below.
What do you mean by corelation and causation?
We can determine how strongly a pair of variables are linearly associated and change together using the statistical technique of correlation. It only states that there is a relationship; it doesn't explain why or how it came to be. Correlation goes one step farther than causality. It states that any change in one variable's value will result in a change in another variable's value, or that one variable causes the occurrence of another. It also goes by the name "cause and effect."
may not always indicate causality. with a well-known instance.
In New York, ice cream sales and homicide rates are associated (Study)
The frequency of homicides fluctuates along with ice cream sales. Does ice cream consumption result in deaths of people?
No. The mere correlation of two events does not imply causation.
Since correlation does not imply causation in our example, ice cream is not to blame for any fatalities.
There are occasionally some unspoken aspects that are somehow connected. Weather is the underlying factor that drives both ice cream sales and homicide rates, as in our example. The increase in ice cream sales and killings is actually a result of the weather.
Therefore, significant linear correlation does not imply causality.
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A math teacher built a scale model of his classroom to ensure his students s were equal distance apart. The scale for the model is 2 inches represents 18 feet. What is the length of the classroom in feet if the scale model lenght is 3 inches
The length of the classroom in feet if the scale model length is 3 inches is 27 feet.
What is multiplication?
One of the four fundamental mathematical operations, along with addition, subtraction, and division, is multiplication. Multiply in mathematics refers to the continual addition of sets of identical sizes.
Given:
The scale for the model is 2 inches, which represents 18 feet,
The scale model length 1 inch = 18 \ 2 = 9 feet length
Thus, the length of the classroom having scale model length is 3 inches
in feet = 9 × 3 = 27 feet
Therefore, the length of the classroom in feet if the scale model length is 3 inches is 27 feet.
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On a team, 3 girls and 2 boys scored a total of 43 points. The difference between the number of points scored by the 3 girls and the number of points scored by the 2 boys is 11 . Each girl scored the same number of points and each boy scored the same number of points. Find the number of points scored by each girl and each boy.
Answer:
each girl scored 1 point and each boy scored 20 points.
Step-by-step explanation:
Let $g$ be the number of points scored by each girl and $b$ be the number of points scored by each boy. We can set up the following system of equations:
$$3g + 2b = 43$$
$$3g - 2b = 11$$
We can solve this system of equations using substitution. From the first equation, we have that $3g = 43 - 2b$. Substituting this expression for $3g$ into the second equation gives:
$$3(43 - 2b) - 2b = 11$$
Solving for $b$, we get:
$$129 - 6b = 11$$
$$6b = 118$$
$$b = 19.5$$
Since $b$ must be a positive integer, the only possible value for $b$ is $20$. Substituting this value into the first equation, we get:
$$3g + 2(20) = 43$$
Solving for $g$, we get:
$$3g = 3$$
$$g = 1$$
Therefore, each girl scored $1$ point and each boy scored $20$ points.
I rlly need help on this badly
3.
The value of x is 20.
The value of y is 30.
4.
The value of x is 30.
The value of y is 4.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
3,
The triangle is an equilateral triangle.
Value of all the angles = 60°
All sides are equal.
Now,
46 = 16 + y
y = 46 - 16
y = 30
Now,
The sum of the three angles of the triangle is 180 degrees.
80 + 60 + (60 - x) = 180
140 + 60 - x = 180
200 - 180 = x
x = 20
4.
There is an equilateral triangle.
5y = 20
y = 4
There is an isosceles triangle.
Where two sides are equal and the angle opposite to the equal sides are also equal.
This means,
(180 - 60) + x + x = 180
120 + 2x = 180
2x = 180 - 120
x = 60/2
x = 30
Thus,
3.
The value of x and y is 20 and 30.
4.
The value of x and y is 30 and 4.
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the linear function y=15.95 represents the cost y (in dollars) of x tickets for a museum. Each customer can buy a maximum of four tickets. find the domain of the function. is the domain discrete or continuous? explain
Domain of the function is (1,4) and the domain is discrete.
What is linear function?
A linear function may be a operate that forms a line during a graph. it's usually a polynomial operate whose degree is utmost one or zero. though the linear functions also are delineate in terms of calculus also as algebra.
Main body:
According to the question :
y=15.95 x
where y = cost ,
x = number of tickets
Each customer can buy a maximum of four tickets.
Plot the ordered pairs. Because you cannot buy part of a ticket,
the graph consists of individual points.
domain of the function is (1,4).
Hence , the domain is discrete.
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An object measures 4 cm x 4 cm x 4 cm/
A. what is the surface area of the object?
B. what is the total surface area if you cut the object into two equal pieces/
Answer:
A. The surface area of a cube with side length 4 cm is 6 * (4 cm * 4 cm) = 96 square cm.
B. The total surface area of two pieces of the cube would be 2 * 96 square cm = 192 square cm. This is because cutting the cube into two equal pieces would double the total surface area of the pieces, but the surface area of each individual piece would remain the same.
Q.1. A man spent of his life in England, of it in Spain and the remaining life, which was 20 years, in the United States. To what age did he live? please i need the answer fast
HELP ASAP DUE SOON FIRST CORRECT ANSWER GETS BRAINLYEST ANSWER AND 50 pts
Allyson works as an editor for the local newspaper. What kind of education might
have been necessary for Allyson to attain this position?
high school diploma
associate degree in computer science
bachelor's degree in journalism
O master's degree in mathematics
Answer:
bachelor's degree in journalism
Step-by-step explanation:
Answer: bachelors degree in journalism
Step-by-step explanation:
Solve for the other leg and for the hypotenuse of the 45-45-90 triangle
Answer:
4th answer option
Step-by-step explanation:
both side angles are 45°, that makes the triangle an isoceles triangle (both legs are equally long).
therefore, v = 7.
Pythagoras gives us
c² = a² + b²
with c being the Hypotenuse (the side opposite of the 90° angle), a and b being the legs.
in our case
u² = 7² + 7² = 49 × 2
u = sqrt(49 × 2) = 7 × sqrt(2)
Sally has 2 cats and each cat eats 1/4 of a tin of cat food each day.
Sally buys 7 tins of cat food.
For how many days will the cat food feed her 2 cats?
You must show your working.
days=?
Answer:
33
Step-by-step explanation:
You buy a watch that is $60. There is a 6% sales tax and a 15% discount. How much is the watch now?
Answer:
$54.06
Step-by-step explanation:
$60x0.85=51
51x1.06=$54.06
What is the GCF of 12, 30, and 18?
Answer:
6
Step-by-step explanation:
Answer: 6
The factors of 12 are: 1, 2, 3, 4, 6, 12
The factors of 18 are: 1, 2, 3, 6, 9, 18
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30
Then the greatest common factor is 6.
5. Case # 5. Word Problem.
y
Amir spent a total of $53.75 on breakfast sandwiches and bagels for his
friends who are visiting from out of town. Each breakfast sandwich costs
$4.25, and each bagel costs $2.00. He bought 5 more bagels than
breakfast sandwiches.
a. Write a system of equations that could be used to solve for
the number of breakfast sandwiches and bagels he bought.
b. Solve the system to determine how many breakfast sandwiches and bagels Amir bought.
The system of equations is 4.25x + 2y = 53.75, y = x + 5, and the number of bangles and breakfast sandwiches Amir bought is 12 and 7 respectively.
What is the equation?A formula known as an equation uses the equals sign to denote the equality of two expressions.
Given:
Amir spent a total of $53.75 on breakfast sandwiches and bagels
Each breakfast sandwich costs $4.25, and each bagel costs $2.00
Calculate the equation as shown below,
4.25x + 2y = 53.75
Here, y = number of bangles and x = number of sandwiches,
y = x + 5
Solve the equation to get the values,
x = 7 and y = 7 + 5 = 12
Therefore, the system of equations is 4.25x + 2y = 53.75, y = x + 5, and the number of bangles and breakfast sandwiches Amir bought is 12 and 7 respectively.
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Write the number in decimal form.
3.39 x 1012
Answer:
3,390,000,000,000
-1,8,11,-9,5,11 have a mode or is it unimodal bimodal or multimodal
Answer:
It has a mode of 11
Step-by-step explanation:
A mode is a # in a data set that occurs more then any other one
Find the following parts of the given numbers. 3/4 of 56
The value of the fraction 3/4 of 56 is 42.
How to calculate the fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
On the other hand, a fraction appears in the numerator or the denominator of a complex fraction.
The value of the fraction will be:
= 3/4 × 56
= 3 × 14
= 42
The value is 42.
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2s+ (-4s). Please hellpoooppp asap
Answer:
-2s
Step-by-step explanation:
=> 2s+ (-4s)
=> 2s - 4s
=> -2s
Select the correct choices to complete the sentence. Find the Error A student was finding the ordered pair for point Y(1.5,−2) after its reflection across the x-axis. Y(1.5,−2) →Y'(−1.5,−2) Complete the following statement explaining the mistake this student made and how to correct it. This student wrote the ordered pair for a reflection across the , 1 of 3. Select Choice , not the , 2 of 3. Select Choice . The correct ordered pair for point Y' is , 3 of 3. Select Choice
The reflection across the x-axis of Y(1.5, -2) is Y'(1.5, 2). Y(1.5,−2) →Y'(−1.5,−2) represents reflection across the y-axis.
What is an ordered pair?
An ordered pair is made up of the ordinate and the abscissa of the x coordinate, with two values given in parenthesis in a certain sequence. In order to understand a point visually, it can be helpful to position it on the Cartesian plane. An ordered pair's numerical values may be fractions or integers.
The rule of reflection over the x -axis is A(x,y) → A'(x,-y)
The rule of reflection over the y -axis is A(x,y) → A'(-x,y).
A student finds that the reflection across the x-axis of Y(1.5,−2) is Y'(−1.5,−2).
Student follows the rule of reflection over the y -axis is A(x,y) → A'(-x,y).
Therefore students do mistake to consider a wrong formula.
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Graph the polygon with the given vertices and its image after a dilation with scale factor k.
W(8,2), X(6, 0), Y( – 6, 4). Z(2, 2); k= -0.5
D
Question 1
The Burger Shack is trying to determine the true proportion of people who
order a burger at their restaurant. One day they sampled 500 customers and
determined that 424 people ordered a burger. Using a 95% confidence level,
calculate a confidence interval for the true proportion of people who order a
burger at The Burger Shack.
O (.813, .878)
O (.654, .701)
O (.858,.889)
10 pts
O (.754, .812)
The confidence interval of the proportion of people who order a burger at the Burger, using a 95% confidence level is; (0.817, 0.879)
What is a confidence interval?
A confidence interval is the likelihood of the parameters of a population to be found between a value set within a specified proportion of time.
The confidence interval at the 95% confidence level of a population proportion can be found by using the following formula;
[tex]\hat p = \pm z^* \cdot \sqrt{\dfrac{\hat {p} \cdot (1 - \hat{p})}{n} }[/tex]
Where:
z = The standard normal distribution value that reflects the 95% confidence level
[tex]\hat p[/tex] = The proportion of the sample that ordered burger
n = The size of the sample in the survey
The z-score at the 95% confidence level is about 1.96
[tex]\hat {p} = \dfrac{424}{500} =0.848[/tex]
Plugging in the values of z, [tex]\hat{p}[/tex], and n, the confidence interval is therefore;
[tex]0.848 \pm 1.96 \times \sqrt{\dfrac{0.848\times (1 - 0.848)}{600} }[/tex]
Resolving the ± into plus and minus, we get;
[tex]0.848 + 1.96 \times \sqrt{\dfrac{0.848\times (1 - 0.848)}{600} } \approx 0.879[/tex]
[tex]0.848 - 1.96 \times \sqrt{\dfrac{0.848\times (1 - 0.848)}{600} } \approx 0.817[/tex]
The confidence interval at 95% confidence level from the above values is therefore;
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if there are 24 students in the class how many received a grade of C
She will give 9 students C's,
(I think i'm not 100% sure)
A sample of size 35 is drawn. The sample average is ~ = 18.4. The sample standard
deviation s = 4.5. Find a 95% confidence interval for the mean u.
95% confidence interval of mean is between (16.91, 19.89)
What is mean and standard deviation ?the mean refers to the average of a set of values. The mean can be computed in a number of ways, including the simple arithmetic mean
Data dispersion in regard to the mean is quantified by a standard deviation, or. Data are said to be more closely grouped around the mean when the standard deviation is low and more dispersed when the standard deviation is high.
Given the sample size of 35, the mean x value is 18-4.
Standard deviation S=4.5
C = 95%
a = 1 - c = 0.05
From standard deviation from z table[tex]z_{0.05}[/tex] is 1.96 we know formula for confidence interval is
mean x +- [tex]z_{\alpha /2}[/tex] - σ/[tex]\sqrt{n}[/tex]
x +- [tex]z_{\alpha /2}[/tex] - σ/[tex]\sqrt{n}[/tex] αμαx ‾ - [tex]z_{\alpha /2}[/tex] - σ/[tex]\sqrt{n}[/tex]
lower limit = 18.4 - 1.96 * 4.5 /[tex]\sqrt{35}[/tex]
18.4 - 1.5
16.91
upper limit = 18.4 + 1.96 * 4.5 /[tex]\sqrt{35}[/tex]
19.89
95% confidence interval of mean is between (16.91, 19.89)
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Preciso de ajuda nesta questão, não consegui resolver ela em 1 hora, agradeço a atenção desde já!
Answer:uno<x
Step-by-step explanation:
what is the length of AB.
Answer: the answer should be 6 units let me know if thats an option
170% of what number is 31
Answer:
Step-by-step explanation:
18
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A store sells a shirt that is discounted by 10%. A coupon is used for an additional 10% off the
discounted price.
What is the total percentage discount on the shirt?
Answer: B
Step-by-step explanation:
50 POINTS ASAP!!!!!!!!!!!!!!!! 50 POINTS ASAP!!!!!50 POINTS ASAP!!!!!50 POINTS ASAP!!!!!!!!!!!!!!!! 50 POINTS ASAP!!!!!50 POINTS ASAP!!!!!
Answer:124
Step-by-step explanation:
Answer:124
Step-by-step explanation:
its right
Find the zeros of the function.
State the multiplicity of multiple zeros.
y = 7x³ - 7x
Answer:
The zeros of the function are x = -3, x = 1, x = 3. The multiplicity of the zero x = 3 is 3.
Step-by-step explanation:
Answer:
0, 1, -1
Step-by-step explanation:
7x³ - 7x = 0
=> x(7x² - 7) = 0
=> 7x(x² - 1) = 0
=> x(x² - 1) = 0
=> x(x+1)(x-1) =0
=> x = 0 or x = -1 or x = 1
One angle measures 24°, and another angle measures (7d-4)°. If the angles are complementary what is the value of d?
d=80
d=17
d = 10
d=3
Based on the definition of complementary angles, the value of d is: 10.
What are Complementary Angles?Complementary angles can be described as two angles that have a sum of 90 degrees when added together.
Given that the two angles, 24° and (7d - 4)°, are complementary angles, it implies that their sum will give a measure of 90°. Therefore, to find the value of d, the following equation would be created based on the definition of complementary angles:
24 + (7d - 4) = 90
Open the parentheses:
24 + 7d - 4 = 90
Combine like terms:
7d + 20 = 90
Subtract 20 from both sides
7d + 20 - 20 = 90 - 20
7d = 70
Divide both sides by 7
7d/7 = 70/7
d = 10
The value of d is: 10.
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What’s
: 2 1/7 + 3/7 (3x - 5) = -4
Please explain step by step to get picked brainliest!
The solution to the equation is x = -28/9.To solve the equation 2 1/7 + 3/7(3x - 5) = -4, let's break it down step by step.
Step 1: Convert the mixed number 2 1/7 to an improper fraction. Multiply the whole number (2) by the denominator (7), then add the numerator (1). This gives us (2 * 7 + 1) / 7 = 15/7.
Step 2: Distribute the 3/7 to the terms inside the parentheses. Multiply 3/7 by each term, which gives us (3/7) * 3x = 9x/7 and (3/7) * (-5) = -15/7.
Step 3: Substitute the converted mixed number and the distributed terms back into the equation. The equation becomes 15/7 + 9x/7 - 15/7 = -4.
Step 4: Combine like terms. Add the fractions with the same denominator: (15/7 - 15/7) + 9x/7 = -4. The fractions cancel each other out, leaving us with 9x/7 = -4.
Step 5: Isolate the variable. Multiply both sides of the equation by the reciprocal of 9/7, which is 7/9. This gives us (7/9)(9x/7) = (7/9)(-4). The 7/9 on the left side cancels out, leaving x = (-28/9).
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A garden table and a bench coat $788 combined. The garden table cost $62 less than the bench. What is the cost of the bench?
Answer:
Step-by-step explanation:
Let T represent table and B represent bench. The garden table costs $62 less than the bench. T = B - 62. plug T = B - 62 into T + B = 788. B - 61 + B = 788. This gives us 425. B = 425.