the manager runs a second model, adding another variable, the amount of wine consumed with meal. in this model, the coefficient for location is no longer significant, the r-squared has increased from 0.712 to 0.719, and the adjusted r-squared has decreased. which of the following is the most likely reason for this pattern of changes?
Answers
The addition of the "amount of wine consumed with meal" variable has likely caused multicollinearity between it and the "location" variable, resulting in the insignificance of the latter variable in the second model.
When two variables are highly correlated with each other, they can cause multicollinearity in a regression model, leading to unstable and insignificant coefficients. The increase in the R-squared value suggests that the added variable has improved the model's predictive power, but the decrease in the adjusted R-squared value indicates that the addition of the variable has not improved the model's overall fit, and the increase in complexity may have decreased the model's generalizability.
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Related Questions
equation of the line that passes through (-6,0) and (0,-24)
Answers
Answer: y= -4x -24
Step-by-step explanation:
In the diagram below, DE is parallel to
AB. If the length of AB is the same as
the length of DC, AC = 9, and
DE = 4, find the length of DC.
Answers
If the length of AB is the same as the length of DC, AC = 9, and
DE = 4, the length of DC is 6 units.
How to find the length?Since DE is parallel to AB and AC = 9, then we can use alternate interior angles to find the length of DC.
Using alternate interior angles, we have:
∠DAC = ∠EAB (Since they are alternate interior angles of two parallel lines)
And from the diagram, we have:
∠DAC = 90° (Since AC is perpendicular to DC)
∠EAB = 90° (Since AB and DE are parallel)
So, we have two right angles, ∠DAC = ∠EAB.
Let find the length of DC:
DC^2 = AC × DE
DC^2 = 9× 4
DC^2 = 36
DC = √36
DC = 6
Therefore, the length of DC is 6 units.
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f(x) = 5x2+2x2 - 90x - 36
find all zeros by factoring
Answers
Answer:
10x+4x-90x-36
14x-90x=36
76x=36
X=36/76
0.47 is the answer
What number must be subtracted from negative 5 for the difference to be negative 2
Answers
hope it helps you .
this is the right answer.
20+20+20+20+20+20+20+9893-2839283+93749-93+8366754439=???
Answers
Answer:
=8,364,018,845
Step-by-step explanation:
Mark me brainiiest.
Answer:
8364018845
Step-by-step explanation:
20+20+20+20+20+20+20 = 140
140+20893-2839283+93749-93+8366754439
Find the lettered angles in each of the following.
( where a point o is given , it is the centre of the circle) .
Answers
t=46°
u=134°
v=23°
w=23°
Answer:
Solution given;
v=w [base angle of triangle]
<SPQ+<SRQ=180°[sum of opposite angle of a cyclic quadrilateral is 180°]
81+v+53+w=180°
134°+v+v=180°
2v=180°-134°
v=46/2
v=23°
w=v=23°
In triangle ∆ PQR
v+w+u=180°[sum of interior angle of a triangle]
23+23+u=180°
u=180°-46°
u=134°
again
In triangle ∆ PSR
t+81+53=180°
t=180°-134°
t=46°
Answer:
t and u are supplementary as opposite angles of a cyclic quadrilateral.
t = 180 - (81 + 53) = 46u = 180 - t = 180 - 46 = 134v and w are equal as opposite angles to equal sides.
v = w = 1/2(180 - u) = 1/2(180 - 134) = 23help asap i need this todayy
Answers
A casserole recipe calls for 8 ounces of cheese. Adrian wants to use 1/2 of the amount of cheese in his casseroles.
How many pounds of cheese does he need to make 22 casseroles with his revised recipe?
Answers
Answer:
88 Ounces
Step-by-step explanation:
1/2 of 8 is 4. 22 times 4 is 88.
On tax-free weekend, Miss Bailey plans to purchase 25 iPad minis for her class. The price of an iPad mini is $329. Use a strategy to determine the amount she will spend.
Explain your reasoning using models or pictures and words.
Answers
Answer:
$8225
Step-by-step explanation:
329 (amount for each ipad mini) x 25 (amount of ipad minis Missbailey is going to buy) = 8225.
the big box (made up of 5 small boxes) on the ecg paper measures:
Answers
When we measure a ECG waveform the large boxes represents 0.2 seconds.
To determine the measurements of the big box on ECG paper, we need to consider the standard calibration of ECG paper.
In most ECG papers, the standard calibration is as follows:
The horizontal distance (width) of a big box is typically 0.20 seconds.The vertical distance (height) of a big box is typically 0.5 millivolts (mV).
These measurements allow for accurate interpretation of the ECG waveform and analysis of heart activity.
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use power series expansions to show that e^iz = cos(z) isin(z)
Answers
The function e^iz = cos(z) isin(z) can be shown by power series expansions
To show that e^(iz) = cos(z) + isin(z), we can use the power series expansions for the functions e^x, cos(x), and sin(x).
The power series expansion for e^x is given by:
e^x = 1 + x + (x^2/2!) + (x^3/3!) + ...
We can substitute ix for x in this power series:
e^(ix) = 1 + ix + (ix^2/2!) + (ix^3/3!) + ...
Simplifying, we have:
e^(ix) = (1 - x^2/2! + x^4/4! - x^6/6! + ...) + i(x - x^3/3! + x^5/5! - x^7/7! + ...)
This can be split into two series, one for the real part (cos(x)) and one for the imaginary part (sin(x)):
e^(ix) = cos(x) + isin(x)
Therefore, we have shown that e^(iz) = cos(z) + isin(z) using power series expansions.
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Solve the inequality and express your answer in interval notation.
x^2-12x+5<0
Answers
Answer:
you solve the main number and you can plus the 1+1 the answer is 2 2=2 the main berb on this answer is no
Step-by-step explanation:
jalok
Answer:
The answer is A.
Step-by-step explanation:
ILL GIVE BRAINLIEST
5 is 30% of what number
Answers
Answer:
16.67 I THINK
Step-by-step explanation:
Answer:
1.5
Step-by-step explanation:
help me with geometry please
Answers
Answer:
180-115=65
180-65-80= 25
y = 25
Consider the system of equations. y = –x + 3 y = –x – 3 The graph of the first equation is shown by the orange line. On a coordinate plane, an orange line goes through points (0, 3) and (3, 0). What is the slope of the orange line? If the second equation was drawn on the same graph, what would be its slope? If the lines of both equations were shown on the same graph, they would . The system of equations has .
Answers
Answer:
Step-by-step explanation:
Answer: The answers are -1, -1, be parallel, and no solution.
Step-by-step explanation: I got it correct on Edge, hope this helps!
Min-jun has a swimming pool that needs to be drained. His pool holds
10,874.5 gallons of water and will need to drain completely in 10.7
hours. What is the change in the water level per hour for Min-jun's
swimming pool? Round your answer to the nearest hundredth.
Answers
Answer:
The change in the water level per hour for Min-Jun's swimming pool is 1016.31 Gallons per hour.
Step-by-step explanation:
Since we have a total amount of 10,874.5 gallons and 10.7 hours total to drain the full pool we divide the total amount by the total time, assuming that the pool drains at a constant rate. When we divide 10,874.5 by 10.7 we get 10.16.3084... and rounding it to the nearest hundreth or the second decimal place we get 1,016.31 gallons per hour.
solve the equation 3( x + 4) = 2x + 4x -6 for x
Answers
3(x + 4) = 2x + 4x - 6
The first step is to open the parentheses on the left by multiplying the terms inside it by the term outside. We have
3x + 12 = 2x + 4x - 6
3x + 12 = 6x - 6
Collecting like terms, we have
6x - 3x = 12 + 6
3x = 18
Dividing both sides by 3,
x = 18/3
x = 6
Jonah bought 3 packages of hot dogs and 2 packages of hot dog buns and paid $21.90. He went back and purchased 2 more packages of hot dogs and 5 more packages of hot dog buns and paid $23.40. ASSUMMING THERE WAS NO CHANGE IN THE INDIVIDUAL COST OF EACH ITEM:
What is the cost per package of hot dogs and hot dog buns?
IT IS NOT $7.30 AND $3.65!!!
Answers
Answer:
b = $2.40
d = $5.70
Step-by-step explanation:
d = hot dog and b = hot dog buns
Equations:
2d + 5b = $23.40
3d + 2b = $21.90
-------------------------------subtract these two equations
-d + 3b = $1.50
3b - $1.50 = d
Substitute:
3d + 2b = $21.90
3(3b - $1.50) + 2b = $21.90
9b - $4.50 + 2= $21.90
11b = 26.40
b = $2.40
Substitute again but this time with b:
3d + 2b = $21.90
3d + 2($2.40) = $21.90
3d + $4.80 = $21.90
3d = $21.90
d = $5.70
passes through (-3, 1) and (-2,-1)
Answers
Answer:
No, Isiah is not correct. The GCF of the coefficients is 1, and there are no common variables among all three terms of the polynomial. 5b4 is a factor of -25a2b5 and -35b4, but not a3. Additionally, a2 is a factor of a3 and -25a2b5, but not -35b4.
Step-by-step explanation:
Answer:
Step-by-step explanation:
the linear equation would be y = -2x-3
During the NCAA basketball tournament season, affectionately called March Madness, part of one team's strategy is to foul their opponent if his free-throw shooting percentage is lower than his two-point field goal percentage. Amos's free-throw shooting percentage is lower and is only 52.5%. After being fouled he gets two free-throw shots each worth one point. Calculate the expected value of the number of points Amos makes when he shoots two free-throw shots.
Answers
I’m not entirely sure but i believe it’s 1.05
Rachel, Mario and Sanjit share some money in the ratios 4 : 3 : 9 Mario receives £96. Work out the difference between the amount received by Rachel and the amount received by Sanjit.
Answers
Answer:
Step-by-step explanation:
If Marios share is 3 parts and is £96, then
Find one part = 96/3 = 32
So,
Rachel receives = 32 x 4 = £128
Sanjay receives = 32 x 9 = £288
Hope this helps
Fill in the blan
points
Given: ABCD is a parallelogram.
Prove: AABD ACDB.
A
D
Statements
Reasons
1. ABCD is a parallelogram.
1.
Given
2.4A 24C
2.
????
Answers
Answer:
Screenshot the answer choices I don't remember them right off rip
Step-by-step explanation:
You may need to use the appropriate appendix table or technology to answer this question. The following results are for independent random samples taken from two populations. Sample 1 Sample 2 n1 = 20 n2 = 30 x1 = 22.8 x2 = 20.1 s1 = 2.2 s2 = 4.6 (a) What is the point estimate of the difference between the two population means? (Use x1 − x2. ) 2.7 (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the difference between the two population means? (Use x1 − x2. Round your answers to one decimal place.)
Answers
a). The difference between the two population means is estimated at a location to be 2.7.
b). 49 different possible outcomes make up the t distribution. The margin of error at 95% confidence is 1.7.
c). The range of the difference between the two population means' 95% confidence interval is (0.0, 5.4).
d). The (0.0, 5.4) represents the 95% confidence interval for the difference among the two population means.
What is standard deviations?The variability or spread in a set of data is commonly measured by the standard deviation. The deviation between the values in the data set and the mean, or average, value, is measured. A low standard deviation, for instance, denotes a tendency for data values to be close to the mean, whereas a high standard deviation denotes a larger range of data values.
Using the equation \(x_1-x_2\), we can determine the point estimate of the difference between the two population means. In this instance, we calculate the point estimate as 2.7 by taking the mean of Sample
\(1(x_1=22.8)\) and deducting it from the mean of Sample \(2(x_2=20.1)\).
With the use of the equation \(df=n_1+n_2-2\), it is possible to determine the degrees of freedom for the t distribution. In this instance, the degrees of freedom are 49 because \(n_1\) = 20 and \(n_2\) = 30.
We must apply the formula to determine the margin of error at 95% confidence \(ME=t*\sqrt[s]{n}\).
The sample standard deviation (s) is equal to the average of \(s_1\) and \(s_2\) (3.4), the t value with 95% confidence is 1.67, and n is equal to the
average of \(n_1\) and \(n_2\) (25). When these values are entered into the formula, we get \(ME=1.67*\sqrt[3.4]{25}=1.7\).
Finally, we apply the procedure to determine the 95% confidence interval for the difference between the two population means \(CI=x_1-x_2+/-ME\).
The confidence interval's bottom limit in this instance is \(x_1-x_2-ME2.7-1.7=0.0\) and the upper limit is \(x_1+x_2+ME=2.7+1.7=5.4\).
As a result, the (0.0, 5.4) represents the 95% confidence interval for the difference among the two population means.
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A chef has 15 3/4lb of beans. She packs them in freezer bags that weigh 2 1/4lb each.
How many freezer bags of beans does the chef pack?
Enter your answer in the box.
Answers
Answer:
7 bags
Step-by-step explanation:
Answer:
the answer is 7 i just took the test and i got a 100%
Step-by-step explanation:
please help
1. x/4 = 12.5
2. 8w = 120
3. 6 = z/4.5
4. 20 = 2.5m
1) x =
2) w =
3) z =
4) m =
Answers
2) w= 15
3) z=27
4) m= 8
.The variables x and y vary inversely. Use the given values to write an equation relating x and y. Then find y when x = 3. x = 1, y = 9
Answers
The given problem states that x and y vary inversely, and by using the given values, an equation is formed (x * y = 9) which can be used to find y when x = 3 (y = 3).
Since x and y vary inversely, we can write the equation as x * y = k, where k is a constant.
Using the given values x = 1 and y = 9, we can substitute them into the equation to find the value of k:
1 * 9 = k
k = 9
Therefore, the equation relating x and y is x * y = 9.
To find y when x = 3, we substitute x = 3 into the equation:
3 * y = 9
y = 9 / 3
y = 3
So, when x = 3, y = 3.
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Which value of the variable is the solution of the equation?
a + $5.92 = $12.29 a = $5.37, $5.47, $6.37, $6.27
Answers
the value of the _____ function at –2.99 is −2.
Answers
To understand why the function evaluates to -2 at -2.99, it is necessary to know the specific function and its definition or the rules. The value of the unknown function at -2.99 is -2.
In the given statement, it is indicated that the value of the unknown function at -2.99 is -2. This implies that when the input to the function is -2.99, the output is -2.
To provide a more detailed explanation, we need to know the specific function being referred to. Without this information, it is difficult to provide a precise explanation for why the function evaluates to -2 at -2.99. The behavior of a function depends on its definition, and different functions can have different rules or equations governing their behavior.
In general, functions can be represented by mathematical expressions or equations, and they map input values to corresponding output values. The function's behavior can be determined by its definition, which may involve various mathematical operations, constants, variables, or specific conditions.
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1) Berizon Virefull is looking for a new jingle. Due to the attention span and vocal range of their target audience, they are looking for a 4 note jingle contained within an octave (C0-C1). Thus pick 4 notes from 13. Repeated notes are allowed and order does matter. How many possible jingles are there?
2) Considering that some of the submittions (see above problem) were boring, Berizon now insists that no note can be repeated, but order still matters. How many possible jingles are there now?
3) If order did not matter, and repetitions were not allowed, how many jingles?
4) If order does not matter and repetitions are allowed?
Answers
Answer:
1.Since there are 13 notes to choose from, the number of possible jingles with repeated notes and order matters is given by the formula for permutations with repetition: 13^4 = 28,561.
2.If no note can be repeated, then we need to use the formula for permutations without repetition: P(13, 4) = 13 x 12 x 11 x 10 = 17,160.
3.If order does not matter and repetitions are not allowed, we need to use the formula for combinations: C(13, 4) = (13!)/(4!(13-4)!) = 715.
4.If order does not matter and repetitions are allowed, we need to use the formula for combinations with repetition: C(13+4-1, 4) = C(16, 4) = (16!)/(4!(16-4)!) = 1820.
The names of the automobile manufacturer of the car that you drive is what type of variables ( scales of measurement)
Answers
The type of variable that represents the names of the automobile manufacturers would be the categorical variable.
What are variables in research work?A variable is defined as the quantity that may change within the context of a mathematical problem, research work or an experiment.
There are various types of variables that include the following:
categorical variables.Nominal variables. Ordinal variables. Numeric variables. Continuous variables. Discrete variables.Learn more about variables here:
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