True. Pearson's r is indeed the technical term for the correlation coefficient that is most often used in psychological research. The correlation coefficient measures the strength and direction of the linear relationship between two variables. It quantifies the extent to which changes in one variable are associated with changes in the other variable.
Pearson's correlation coefficient, denoted by the symbol r, is specifically used to assess the linear relationship between two continuous variables. It ranges from -1 to 1, where a value of -1 indicates a perfect negative linear relationship, 1 indicates a perfect positive linear relationship, and 0 indicates no linear relationship.
Psychological research often involves examining the relationships between various psychological constructs, such as intelligence and academic performance, self-esteem and mental health, or stress and job satisfaction. Correlation analysis using Pearson's r allows researchers to determine the strength and direction of these relationships.
By calculating Pearson's correlation coefficient, researchers can assess the degree of association between variables and make informed interpretations about the nature and strength of the relationship. This information is valuable in understanding patterns, making predictions, and informing interventions or treatments in psychological research and practice.
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solve for y:
6=2(y+2)
Does anyone know what the answer to this would be?
Answer:
D
Step-by-step explanation:
What is the volume of the prism, in cubic centimeters?
Answer:
Vol = 120 cm^3
Step-by-step explanation:
The volume of a prism is:
Vol = BaseArea×height
Here, the base is the triangle.
Area_triangle
= 1/2bh
= 1/2•6•4
= 12 cm^2
The height is 10cm (and we don't even need the 5cm measurement given)
Volume
= BaseArea × height
= 12 × 10
= 120 cm^3
Kindly help me to solve questions
Answer:
I'm sorry, because I can only answer questions number 5
Cherries are $2.00/ pound what is the constant of proportionality
Answer:
$2 price per pound
2 is the constant of proportionality
Step-by-step explanation:
Price of Cherries = $2 per pound
what is the constant of proportionality
If y = total cost of buying x pounds of Cherries at $2 per pound
The equation below represent the situation
y = $2 * x
y = 2x
The constant of proportionality is 2
That is, the $2 price per pound
Someone please help ASAP
Answer:
5050
Step-by-step explanation:
To solve via calculator, go to the MATH menu, then the 0th option should say "summation" and insert it from there.
To solve algebraically, break the summation into 2 parts. Excuse the strange formatting, I can't find a way to do it normally.
4(\(\frac{50}{1}\)∑n) -
= 4( \(\frac{50(50+1)}{2}\)) - 50(1)
= 5100 - 50
= 5050
The points G(1, 4) and H(3, 0) are on a coordinate plane. What is the approximate distance between points G and H?
Then the approximate distance between the points is 4.47 units.
What is the approximate distance between points G and H?
We have the points G(1, 4) and H(3, 0), to get the distance between them we use the distance formula, we will get:
\(D = \sqrt{(1 - 3)^2 + (4 - 0)^2} \\\\D = \sqrt{(-2)^2 + (4)^2}\\\\D = \sqrt{4 + 16} = \sqrt{20}\)
And we know that √20 ≈ 4.47
Then the approximate distance is 4.47 units.
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Simple Interest Round answers to the nearest cent. 1. John is going to invest $100 in an account for 3 years. If the account earns 6% simple interest, how much interest can he expect to earn?
Given Data:
The initial investment is: P=$100
The total period of investment is: t=3
The annual interest is: 6%.
For the simple interest, the expression to calculate the interest in t years is,
\(I=(P\times\frac{r}{100})\times t\)Here r is in percentage.
Substitute known values in the above expression.
\(\begin{gathered} I=(100\times\frac{6}{100})\times3 \\ =(6)\times3 \\ =18 \end{gathered}\)Thus, the total intrest for 3 years will be $18.
The difference between two numbers is 3. The sum of the two numbers is 13. What is the value of each
number?
\(x,y\) - two numbers
\(x-y=3\\\underline{x+y=13}\\2x=16\\x=8\\\\8-y=3\\y=5\)
So, it's 8 and 5.
how to find point of inflection
Step-by-step explanation:
They can be found by considering where the second derivative changes signs. In similar to critical points in the first derivative, inflection points will occur when the second derivative is either zero or undefined.
make me brainlist
You can use counters to help you represent the number 32 in this problem.
there are 32 marbles, and 32 has 3 factor pairs.
one factor pair is 1 group of 32 counters. what are the other two factor pairs?
Based on the given number 32, the other two factor pairs are (2, 16) and (4 8).
The term factor in math is defined as a number or algebraic expression that divides another number or expression evenly.
Here we have given that there are 32 marbles, and 32 has 3 factor pairs.
Here we have already given one factor pair that is (1, 32).
Now, we have to find the other factor pair for the number, in order to obtain the pair factors of 32 firstly we will find all the factors of 32 by checking which all numbers divide 32 completely.
And then we will check on multiplying which two factors together we are getting number 32 back and form a pair of them and get our desired answer.
According to this condition we have identified the following factor pair for the number, they are
=> (2, 16) = 32
=> (4, 8) = 32
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What percentage of videos on the streaming site are between 264 and 489 seconds? 0.15% 49.85% 95% 99.7%
Answer:
49.85%
Step-by-step explanation:
Streaming is defined as sending and receiving an video or an audio content in continuous flow over any network. It allows one to begin the playback and while it sends the rest of the data.
In the context, the percentage of the videos on a streaming site that is between 264 and 489 seconds is 49.85% which is found by a graph where the distribution of the lengths of the videos in seconds on a popular video streaming sites.
Each base in this right figure is a semicircle with a radius of
7
cm
7 cm7, start text, space, c, m, end text. A cylinder-like figure where the bases are semicircles instead of circles. The radius of the semicircle is 7 centimeters. The height of the figure is twenty centimeters. A cylinder-like figure where the bases are semicircles instead of circles. The radius of the semicircle is 7 centimeters. The height of the figure is twenty centimeters. What is the volume of the figure?
Give an exact answer in terms of pi
The volume of the figure is 1538.6 cm³.
We have,
The area of a semicircle.
= 1/2 x πr²
Now,
Radius = r = 7 cm
So,
The area of a semicircle.
= 1/2 x πr²
= 1/2 x 3.14 x 7²
= 1/2 x 3.14 x 49
= 76.93 cm²
Now,
Height = 20 cm
The volume of the figure.
= Area of the semicircle x height
= 76.93 x 20
= 1538.6 cm³
Thus,
The volume of the figure is 1538.6 cm³.
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i need help pleasePaul is sewing the patch shown on to his uniform. What is the area of the patch?The area of the patch is ____ square centimeters.
The shape is made up of a square and 4 rectangles
Area of a square = length x length
length = 2cm
Area = 2 x 2= 4 square cm
\(\begin{gathered} \text{Area of triangle} \\ =\frac{1}{2}\times base\text{ }\times height \end{gathered}\)base= 2cm
height = 3cm
\(\begin{gathered} \text{Area of triangle = }\frac{1}{2}\times2\times3=3\operatorname{cm} \\ sincethereare4equivalenttrianglesareaofalltriangles=4x3=12cm^2 \end{gathered}\)The total area of patch = area of all triangles + area of square
= 12 + 4= 16 square cm
The value of a car in 1990 is 7700 dollars and the value is expected to go down by 390 dollars per year for the next 10 years.
The value of the car in 2000 is expected to be $3800, given a starting value of $7700 in 1990 and a decrease of $390 per year for 10 years.
To find the value of the car in each subsequent year, we can subtract $390 from the previous year's value. Let's calculate the value of the car for each year from 1990 to 2000.
Year 1990: $7700
Year 1991: $7700 - $390 = $7310
Year 1992: $7310 - $390 = $6920
Year 1993: $6920 - $390 = $6530
Year 1994: $6530 - $390 = $6140
Year 1995: $6140 - $390 = $5750
Year 1996: $5750 - $390 = $5360
Year 1997: $5360 - $390 = $4970
Year 1998: $4970 - $390 = $4580
Year 1999: $4580 - $390 = $4190
Year 2000: $4190 - $390 = $3800
Therefore, the value of the car is expected to be $3800 in the year 2000.
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Triangles 1 and 2 are similar. What ratio relates a side length of triangle 1 to the corresponding side length of triangle 2? Fill in thebox to complete the ratio.25.528022.562A8BTriangle 1Triangle 2to 12
If triangles 1 and 2 are similar then ratio of two sides is 25:52
A triangle is a polygon with edges and three terminals. It belongs to the basic geometric shapes. A triangle containing the angles A, B, and C is referred to by the term ABC.
Any three Euclidean points that are not collinear result in a triangle and a rectangle. In other words, any triangle is exclusively covered by that plane and is contained within that plane.
We know that any two triangles are similar by three axioms:
SSS , AAS , SAS or AAA axiom of similarity.
In the Euclidean plane, every triangle is contained within a single plane, but in higher-dimensional Euclidean spaces, this is no longer the case. This article addresses triangles in terms of geometry, more specifically the Euclidean plane, unless otherwise stated.
ratio of the sides of two triangle are in same ration when the triangles are similar
Now given ratio is 25:52, hence the ratio of the sides will be same.
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Find the value of x.
130°
(3x + 5)º
Answer:
15 = X . hope this helped
Please help this is due in a few Brainliest will be rewarded!!!!!
Step-by-step explanation:
the middle one has to be the same for both part ratios.
the best here is to bring the ratio element of B in the first part ratio to 10. we need to double the B element there
for that (as a ratio is a fraction) we also have to adapt the A element in the same way.
so, we get
4×2 : 5×2 : 9 =
= 8 : 10 : 9
and that is also shown in the graphic.
Answer:
X:Y:Z= 8:10:9
Step-by-step explanation:
Let x be the number of students in class A
Let y be the number of students in class B
Let z be the number of students in class C
x:y = 4:5
y:z= 10: 9
x:y:z = ?
Find the LCM of the y terms (5 and 10 ) which is 10
Divide 10 by the first y term (5) = 2
Divide 10 by the second y term(10) = 1
X: y = (4 x 2) :(5 x 2)= 8:10
y:z =(10 x 1) : (9:1)= 10:9
x:y:z= 8:10:9
please i’ll give you brainliest and thanks !
Answer:
1. 40
2. 124
3. 160
Step-by-step explanation:
1. 12x - 20 = 60 - 20 = 40
2. 12x - 20 = 144 - 20 = 124
3. 12x - 20 = 180 - 20 = 160
1. what is the ksp expression for the dissolution of ca(oh)2? ksp = [ca2 ] [oh−] ksp = [ca2 ] 2[oh−]2 ksp = [ca2 ][oh−]2 ksp = [ca2 ][oh−]
The Ksp expression for the dissolution of Ca(OH)2 is Ksp = [Ca2+][OH−]^2.
The Ksp expression is an equilibrium constant that describes the degree to which a sparingly soluble salt dissolves in water. For the dissolution of Ca(OH)2, the balanced equation is:
Ca(OH)2(s) ⇌ Ca2+(aq) + 2OH−(aq)
The Ksp expression is then written as the product of the concentrations of the ions raised to their stoichiometric coefficients, which is Ksp = [Ca2+][OH−]^2. This expression shows that the solubility of Ca(OH)2 depends on the concentrations of Ca2+ and OH− ions in the solution. The higher the concentrations of these ions, the greater the dissolution of Ca(OH)2 and the larger the value of Ksp.
It is worth noting that Ksp expressions vary depending on the chemical equation of the dissolution reaction. For example, if the equation were Ca(OH)2(s) ⇌ Ca(OH)+ + OH−, the Ksp expression would be Ksp = [Ca(OH)+][OH−].
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What conditions should you check to make sure that your linear model is reasonable? Select all that apply. A. Quantitative Variables Condition B. Straight Enough Condition C. Does the Plot Thicken? Condition ID. D. Outlier Condition
The conditions that should be checked to make sure that your linear model is reasonable are: Quantitative Variables Condition, Straight Enough Condition, Outlier Condition.
A. Quantitative Variables Condition: This condition requires that both the explanatory and response variables be quantitative, so that the relationship between them can be modeled with a straight line.
B. Straight Enough Condition: This condition requires that the relationship between the two variables be approximately linear, so that the linear model is a good fit for the data.
D. Outlier Condition: This condition requires that there are no outliers in the data that can significantly affect the linear model.
The "Does the Plot Thicken?" condition is not a valid condition for checking the reasonableness of a linear model.https://brainly.com/question/29665935
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Please help! I'll give 100 points!
The scores of the semester exam for one math class are shown below.
81, 66, 79, 76, 55, 66, 86, 83, 64, 49, 71, 76, 46, 75, 60, 68, 75, 86
Using the data, create a box plot on scratch paper in order to complete the following.
Part A: Identify the spread and overall shape of the data.
Part B: Describe at least two ranges where 50% of the exam scores lie, and explain what this means for the students in the math class.
Answer:
All students have to take at least one math class and one language class. Twenty students take calculus, and thirty students take statistics.
A group of 10 students went to a football game at their university. They each bought a ticket for $x and spent $20 on a t-shirt. A group of 4 adults went to the same football game and paid five times as much for each of their tickets as each student. The group of adults also bought a long-sleeved t-shirt for $25 each. The group of students spent the same amount as the group of adults. What is the cost of each student ticket? Write and solve an equation to model the problem. Explain the meaning of the solution. Input Field 1 of 1 Skip to input field
Answer: Solution:
Step 1: Set up a table with quantity and value.
quantity
$3 tickets
$2 tickets
together
Step 2: Fill in the table with information from the question.
The cost of tickets for a play is $3.00 for adults and $2.00 for children. 350 tickets were sold and $950 was collected. How many tickets of each type were sold?
Let x = number of $3 tickets
Let y = number of $2 tickets
Total = quantity × value
quantity value total
$3 tickets x 3 3x
$2 tickets y 2 2y
together 350 950
Step 3: Add down each column to get the equations
x + y = 350 (equation 1)
3x + 2y = 950 (equation 2)
Use Substitution Method
Isolate variable x in equation 1
x = 350 – y (equation 3)
Substitute equation 3 into equation 2
3(350 – y) + 2y = 950
1050 – 3y + 2y = 950
3y – 2y = 1050 – 950
y = 100
Substitute y = 100 into equation 1
x + 100 = 350
x = 250
Answer: 250 $3 tickets and 100 $2 tickets were sold.
Step-by-step explanation:
The solution is, 250 $3 tickets and 100 $2 tickets were sold.
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
Solution:
Step 1: Set up a table with quantity and value.
quantity
$3 tickets
$2 tickets
together
Step 2: Fill in the table with information from the question.
The cost of tickets for a play is $3.00 for adults and $2.00 for children. 350 tickets were sold and $950 was collected.
Let x = number of $3 tickets
Let y = number of $2 tickets
Total = quantity × value
quantity value total
$3 tickets x 3 3x
$2 tickets y 2 2y
together 350 950
Step 3: Add down each column to get the equations
x + y = 350 (equation 1)
3x + 2y = 950 (equation 2)
Use Substitution Method
Isolate variable x in equation 1
x = 350 – y (equation 3)
Substitute equation 3 into equation 2
3(350 – y) + 2y = 950
1050 – 3y + 2y = 950
3y – 2y = 1050 – 950
y = 100
Substitute y = 100 into equation 1
x + 100 = 350
x = 250
Answer: 250 $3 tickets and 100 $2 tickets were sold.
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1. the steps of hypothesis testing you intend to draw a random sample in order to test a hypothesis about an unknown population mean. you will use a hypothesis test. a description of each of the steps of a hypothesis test follows, but they may be specified in the incorrect order. specify the correct order of the steps. state the hypotheses about the unknown population. make a decision about the unknown population. select a sample and compute the z-score for the sample mean. set the criteria for a decision about the unknown population.
The correct order of the steps in hypothesis testing when testing a hypothesis about an unknown population mean is to State the hypotheses about the unknown population.
Select a sample and compute the z-score for the sample mean.
Set the criteria for a decision about the unknown population.
Make a decision about the unknown population.
In hypothesis testing, we start by stating the null hypothesis (H0) and the alternative hypothesis (Ha) about the unknown population mean.
Next, we select a random sample from the population and compute the z-score for the sample mean using the formula:
z = (sample mean - population mean) / (standard deviation / √sample size).
After that, we set the criteria for making a decision about the unknown population.
This involves choosing a significance level (alpha), which determines the threshold for rejecting the null hypothesis.
Finally, we make a decision based on the computed z-score and the criteria set earlier. If the z-score falls within the acceptance region, we fail to reject the null hypothesis.
If the z-score falls outside the acceptance region, we reject the null hypothesis in favour of the alternative hypothesis.
The correct order of the steps in hypothesis testing for testing an unknown population mean is to state the hypotheses, select a sample and compute the z-score, set the decision criteria, and make a decision about the unknown population.
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What's the value of x
A. 24 square root of 3
B. 6
C. 12 square root of 3
E. 12
Answer:
A. 24 square root of 3
Step-by-step explanation:
You have the triangle that has a adj and opp side. So you will use tan on your calculator to get you answer. To find the answer used this to help
\( \tan(60) \times \frac{x}{14} \)
After plugging it in to the calculator, you should get 24.248 as the answer, which is 24 square root of 3
Hope this helped
Select the algebraic definition for the piecewise function graph.
Answer:
I don't the answer man sorry
A helicopter hovers 1300 feet above a small island. The figure shows that the angle of depression from the helicopter to point P is 47°. How far off the coast, to the nearest foot, is the island?
Answer:
1.212 ft
Step-by-step explanation:
\( \tan(47) = \frac{1300}{d} \\ \\ d = \frac{1300}{ \tan(47) } \\ \\ d = 1.212 \\ \\ \)
ANSWER: 1.212 ft
read the picture plsssssssssssss
If the expression be 23 x² + 3x + 8 then the constant exists 8.
What is meant by expression?The addition, subtraction, multiplication, and division arithmetic operators are used to write a group of numbers together to form a numerical statement in mathematics. The expression of a number can take on various forms, including verbal form and numerical form.
A mathematical expression is a finite combination of symbols that is well-formed in accordance with context-specific norms.
A mathematical expression is a phrase that includes at least two numbers or variables, at least one arithmetic operation, and the expression itself. Any one of the following mathematical operations can be used. A sentence has the following structure: Number/variable, Math Operator, Number/Variable is an expression.
During the course of a program's execution, a constant's value cannot change. As a result, the value is constant, as implied by its name. During the course of a program's execution, a variable's value can change. As a result, the value might change, as implied by its name.
Let the expression be 23 x² + 3x + 8
then the constant exists 8.
Therefore, the correct answer is option C. 8.
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The formula K= 5/9 (F - 32) + 273.15 converts temperatures from degrees Fahrenheit F to Kelvin K.
Solve the formula for F
Answer:
\(F=\dfrac{9}{5}(K-273.15)+32\)
Step-by-step explanation:
Undo the various operations done to F.
\(K=\dfrac{5}{9}(F-32)+273.15\quad\text{given}\\\\K-273.15=\dfrac{5}{9}(F-32)\quad\text{subtract 273.15}\\\\\dfrac{9}{5}(K-273.15)=F-32\quad\text{multiply by 9/5}\\\\\boxed{F=\dfrac{9}{5}(K-273.15)+32}\quad\text{add 32}\)
The table shows the amount of rainfall in Maryville during each week in April. What was the total amount of rainfall in the month of April?
Week 1 - 2 2/3
Week 2 - 1/8
Week 3 - 1 3/4
Week 4 - 1/2
Step-by-step explanation:
Can you show me what the table shows :)