in an emergency department, patients are assessed and placed in a categorical scale of 1, 2, 3, 4, or 5 based on the severity and urgency of their medical needs. how many dummy variables would be needed to include this categorical variable in a regression model?
Answers
Total 4 dummy variables would be needed to include this categorical variable in a regression model.
A regression analysis serves as the foundation for many types of forecasting and determining the effects on target variables. When you hear about studies in the news about fuel efficiency, pollution causes, or the effects of screen time on learning, a regression model is frequently used to back up their claims.
A dummy variable (also known as an indicator variable or simply dummy) in regression analysis is one that takes the values 0 or 1 to indicate the absence or presence of some classification impact that may be predicted to shift the result.
Total 4 dummy variables would be needed to include this categorical variable in a regression model.
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Related Questions
Children should be encouraged to use the standard algorithms only, as these are widely used by adults.
TrueFalse
Answers
ms.lopez can do 25 push ups. ms. red can do twice as many push ups as ms.lopez. how many more push ups can ms.red do than ms.lopez
Answers
Answer:
Ms. Red can do 25 more push ups than Ms. Lopez.
Step-by-step explanation:
25 x 2 = 50.
50 is how many Ms. Red can do.
50-25= 25.
shannon's living room is a 12 bye 18 foot rectangle. She wants to cover as much of the floor as possible with 6 foot diameter circular rugs without overlap 1). How much of the living room space can shannon cover with the circular rugs to the nearest square foot? ( use PI = 3.14)
Answers
Solution
We can create the following plot:
Part 1
From this case we can see in the figure that the maxium number of circular rugs are 6
The total area is given by:
A= 12ft * 18 ft= 216 ft2
And the area for a single rug is:
\(A=\pi\cdot(3ft)^2=28.274ft^2\)Then the area for the 6 rugs is:
\(A_T=28.274\cdot6=169.646ft^2\)And rounding to the nearest square foot we got:
170 ft2
Part 2
The remaining space would be given by:
R= 216-170 ft2= 46ft
There are 5280 feet in a mile and about 3.28 feet in a meter. Given that sound travels about 343 meters per second what’s is the distance in miles from alyssa to the lighting bolt
Answers
Answer: We know that sound travels about 343 meters per second. To convert the distance in meters to miles, we need to use the conversion factor that there are 3.28 feet in a meter and 5280 feet in a mile.
1 mile = 5280 feet = 5280/3.28 meters = 1600 meters
Therefore, the distance in miles from Alyssa to the lightning bolt can be calculated by dividing the distance in meters by the number of meters per mile:
distance in miles = distance in meters/1600
So, the distance in miles from Alyssa to the lightning bolt is 343 meters/1600 miles = 0.215 miles (approx)
Note that this calculation is based on the assumption that sound travels 343 meters per second and it's an approximation.
Step-by-step explanation:
what is the anwser to 40.5 - 5.35
Answers
It is 35.15. Hope it helps
Samuel starts saving for his first car by opening a savings account and depositing $100. He plans to make a deposit every month to continue saving. Each term The amount of money in Samuel's savings account can be modeled by the sequence 100, An An-1 + 75, where n is the number of months since his initial deposit. - Use the drop-down menus below to complete the statements about his savings account growth. The sequence modeling the amount of money in Samuel's savings account is ✓the previous term.
Answers
Answer: The sequence modeling the amount of money in Samuel’s savings account is a recursive sequence. Each term in the sequence is determined by adding $75 to the previous term. The first term in the sequence is $100, representing Samuel’s initial deposit. After n months, the amount of money in Samuel’s savings account can be calculated using the formula An = An-1 + 75, where An represents the amount of money in his account after n months and An-1 represents the amount of money in his account after n-1 months.
For example, after 1 month, the amount of money in Samuel’s savings account will be A1 = A0 + 75 = 100 + 75 = $175. After 2 months, the amount of money in his account will be A2 = A1 + 75 = 175 + 75 = $250. And so on.
In a greenhouse, basil is grown in planters that have a base of 5 1/2 in by 1 2/3 in. If there is a 3 x 3 array of these planters with no space between them, what is the area covered by the planters?
Answers
Answer: 82.5 inches
Step-by-step explanation: We know that each plantar has a base of 5.5 by 1 2/3. So if we multiply 5.5 by 1 2/3 we can get 9.166666667. However, there is 9 planters because 3 times 3 is 9. So if we multiply 9.166666667 by 9 we will get 82.5 inches
Solve For X. Solve similar triangles (advanced)
Answers
7^2 +6^2
49+36 = 85
Radical85 = 9.21
So x will be 3.9
The value of x in the given similar triangles ADB and BCE is 4.5.
To solve for x in the given similar triangles ADB and BCE, we can set up the proportion of corresponding sides:
In triangle ADB, we have:
AB/BD = x/DE
Substitute the given values:
3/4 = x/6
Now, cross-multiply and solve for x:
3 * 6 = 4x
18 = 4x
x = 18/4
x = 4.5
So, the value of x is 4.5.
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Sadie worked 14 hours last weekend at Pickles and Onions sub shop. On Saturday, her gross
income was $90 but her net income was only $77.75. On Sunday, her gross income was $120
and her net income was $101.38.
How much did Sadie pay in payroll taxes for the weekend? /PLS HELP
Answers
Answer:
$30.87
Step-by-step explanation:
Saturday
- gross: $90
- net: $77.75
Sunday
- gross: $120
- net: $101.38
Total gross: 90 + 120 = $210
Total net: 179.13
Total tax: 210 - 179.13 = 30.87
A population of 100 frogs has a growth rate of 1.25% each month. At this growth rate,
the function f(x) = 100(1.25)* gives the population in x months. In how many months
will the population first reach 500?
Answers
Answer: 7.2 months
Step-by-step explanation:
Hi, to answer this question we have to substitute f(x) =500 in the equation given:
f(x) = 100(1.25)^x
500= 100(1.25)^x
Solving for x (number of months)
500/100 = 1.25^x
5 = 1.25^x
log 5 =log 1.25^x
log 5 =x (log 1.25)
log 5 /log 1.25 =x
x = 7.2 months
Feel free to ask for more if needed or if you did not understand something.
chris has been given a list of bands and asked to place a vote. his vote must have the names of his favorite and second favorite bands from the list. how many different votes are possible?
Answers
There are nC2 different votes possible, where n is the number of bands on the list and nC2 represents the number of ways to choose 2 bands out of n.
To calculate nC2, we can use the formula for combinations, which is given by n! / (2! * (n-2)!), where ! represents factorial.
Let's say there are m bands on the list. The number of ways to choose 2 bands out of m can be calculated as m! / (2! * (m-2)!). Simplifying this expression further, we get m * (m-1) / 2.
Therefore, the number of different votes possible is m * (m-1) / 2.
In the given scenario, we don't have the specific number of bands on the list, so we cannot provide an exact number of different votes. However, you can calculate it by substituting the appropriate value of m into the formula m * (m-1) / 2.
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(algebra)
Jane and Nina live 480 miles apart. Wanting to surprise each other, they happened to start driving at the same time, and they met 3 hours later. If Nina’s speed was 10 mph faster than Jane’s speed, what was Jane’s speed?
a) 70 mph
b) 75 mph
c) 80 mph
d) 85 mph
e) 90 mph
So, I’m pretty sure the equation will look something like this
10x + 10(x-4) = 1,000
But don’t quote me on that.
Answers
3x + 3(x+10)= 480
X = 75.
Two functions, f and g are defined on R, the set of real numbers, by f(x)=x²-5 and g(x) = 3x - 1. Find f(g(x)).
Answers
Answer:
f(g(x)) = 9x² - 6x - 4
Step-by-step explanation:
f(g(x) )
= f(3x - 1)
= (3x - 1)² - 5 ← expand factor using FOIL
= 9x² - 6x + 1 - 5
= 9x² - 6x - 4
solve for x
5/6x - 2x + 4/3 = 5/3
Answers
Answer:
-2/7
Step-by-step explanation:
-7/6(x)=1/3
To find a segment parallel to another segment and through a given point, fold
a piece of paper so that the fold goes through the point and the pieces of the
segment on either side of the fold match up.
• À. True
• B. False
Answers
Finding a line segment parallel to another segment and passing through a given point is true.
What is line segment?A line segment is a finite portion of a line that is bounded by two distinct points.
According to question:The statement is asking whether the following method is true or false for finding a line segment parallel to another segment and passing through a given point:
Take a piece of paper.Fold the paper so that the fold line goes through the given point.Place the original segment on the paper so that one end of the segment is on one side of the fold and the other end is on the other side of the fold.Trace the segment onto the paper on both sides of the fold.Remove the original segment and connect the two traced segments with a straight line.This method is called the "fold-and-copy" method, and it is a valid way to construct a segment parallel to another segment and passing through a given point. The reason this works is because when the paper is folded along the given point, the fold line is perpendicular to the original segment. When the segment is copied onto the paper on both sides of the fold, the resulting segments are also perpendicular to the fold line. Since two lines that are both perpendicular to the same line are parallel, the resulting segment is parallel to the original segment. The resulting segment also passes through the given point, since it was copied from the original segment which passes through the given point. Therefore, the statement is true.
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Can someone teach me how to solve this please
Answers
Answer: I can help you but I don’t see anything
Step-by-step explanation:
Each histogram represents a set of data with a median of 29.5. Which set of data most likely has a mean that is closest to 29.5?
A graph shows the horizontal axis numbered 9 to 48. The vertical axis is numbered 1 to 5. The graph shows an upward trend from 1 to 33 then a downward trend from 33 to 45.
A graph shows the horizontal axis numbered 15 to 48. The vertical axis is numbered 1 to 5. The graph shows an upward trend from 1 to 30 then a downward trend from 30 to 45.
A graph shows the horizontal axis numbered 12 to 56. The vertical axis is numbered 2 to 8. The graph shows an upward trend from 1 to 32 then a downward trend from 32 to 56.
A graph shows the horizontal axis numbered 15 to 54. The vertical axis is numbered 1 to 5. The graph shows an upward trend from 1 to 24, a downward trend from 24 to 27, an upward trend from 27 to 30, a downward trend from 30 to 39, an upward trend from 39 to 45, a downward trend from 45 to 48, then an upward trend from 48 to 51.
Answers
To determine which set of data most likely has a mean closest to 29.5, we need to analyze the shape and position of the histograms in relation to the value 29.5.
Looking at the histograms described:
The first histogram ranges from 9 to 48, and the upward trend starts from 1 and ends at 33, followed by a downward trend. This histogram suggests that there may be values lower than 29.5, which would bring the mean below 29.5.
The second histogram ranges from 15 to 48, with an upward trend from 1 to 30 and then a downward trend. Similar to the first histogram, it suggests the possibility of values lower than 29.5, indicating a mean below 29.5.
The third histogram ranges from 12 to 56, and the upward trend starts from 1 and ends at 32, followed by a downward trend. This histogram covers a wider range but still suggests the possibility of values below 29.5, indicating a mean below 29.5.
The fourth histogram ranges from 15 to 54 and exhibits multiple trends. While it has fluctuations, it covers a wider range and includes both upward and downward trends. This histogram suggests the possibility of values above and below 29.5, potentially resulting in a mean closer to 29.5.
Based on the descriptions, the fourth histogram, with its more varied trends and wider range, is most likely to have a mean closest to 29.5.
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Answers
Question
Lila has $40 in a savings account that earns 10% interest, compounded annually.
To the nearest cent, how much interest will she earn in 2 years?
Answers
Answer:
$40.8
Step-by-step explanation:
Use the formula
n(1+percentage given/100)\(x^{of the given year}\)
PS: the x means nothing just wanted to show you it is an indices
40(1+10/100)^2
40x1.01^2=$40.80
The table below shows the percentage mark distribution of a number of candidates in a physics examination.
The table is in the attached image.
The completion of the table is :
Mark : 90-99
Frequency : 2
1. Make a cumulative frequency table and use it to draw the cumulative frequency curve.
II. from your graph estimate :
a. the Median Mark
b. the number of candidates that passed if the pass mark was 45% .
c. what is the probability that a person chosen at random from the candidates passed the examination.
Answers
Answer:
See belowStep-by-step explanation:
(b)
The table is attached(i)
The graph is attached(ii)
(a) Cumulative frequency is 500, median is at 249, 250, the horizontal line from point 250 on y-axis intersecting the graph at approximately 52%, this is the median
(b) Vertical line from the 45% mark intersects the graph at approximately 177th point.
The number of candidates passed the test:
500 - 177 = 323(iii) P(pass) = 323/500 = 0.626 or 62.6%
If the bottom of a ship is 15.8 below the surface of the sea, calculate the pressure at the bottom of the ship. The density of the seawater is 1030kg/m3
Answers
Depth, h= 15.8
Density of seawater= 1030kg/m3
We need to find:
Pressure
Answer:
P= ρhg
P=(1030)(15.8)(9.81)= 159647.94 Pa
What is the final reason???? I will give brainliest!
Answers
A graphing calculator costs $85. The sales tax on the calculator is 8%. What is the total cost of
the
calculator? *
Answers
Answer:
$65
Step-by-step explanation:
Ellen has two pizzas left after a party. One is whole and one has been half-eaten. The whole pizza has a radius of 7 inches. The half eaten pizza has a diameter of 20 inches.
Which pizza has a greater circumference?
Answers
Answer:
half eaten pizza has greater circumference
Step-by-step explanation:
full eaten pizza's circumference = 2πr
= 2 * 3.14 * 7 = 43.96 inches
half eaten pizza's circumference = πd
= 3.14 * 20
=62.8 inches
In a simple regression model study, the following results are found: The regression line is Y with hat on top=5+2.X Given sum left parenthesis Y minus Y with bar on top right parenthesis squared =30 and, sum left parenthesis Y minus Y with hat on top right parenthesis squared =5. Then r2 will be
1
2
0.833
1.5
Answers
The correct answer is (c) 0.833, representing that approximately 83.3% of the variance in the dependent variable is explained by the independent variable in the given regression model.
The coefficient of determination, denoted as r², represents the proportion of the variance in the dependent variable (Y) that can be explained by the independent variable (X) in a simple regression model. It ranges between 0 and 1, where a value closer to 1 indicates a stronger relationship between the variables.
In this case, we are given the sum of squares of the deviations from the mean (SSM) and the sum of squares of the residuals (SSE). The coefficient of determination can be calculated as follows:
r² = SSM / SST
Where SST (total sum of squares) is the sum of squares of the deviations from the mean of the dependent variable.
From the given information, we have:
SSM = 5
SST = 30
Plugging these values into the formula, we get:
r² = 5 / 30 = 0.1667
However, r² represents the proportion of the variance explained, so we subtract it from 1 to obtain the proportion of unexplained variance. Therefore, the coefficient of determination is:
r² = 1 - 0.1667 = 0.833
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What is 1 1/2 + 2 3/5
Answers
Answer:
i think its 5.7
Step-by-step explanation:
Answer:
4 1/10
Step-by-step explanation:
Which of the following is a geometric sequence?
0, 2, 6, 12, 72, . . .
4, 9, 14, 19, 24, . . .
1, 3, 9, 27, 81,
Answers
Answer:
1, 3, 9, 27, 81, is a geometric sequence.
Step-by-step explanation:
A geometric sequence is basically a sequence of numbers that's multiplied by or divided one specific set number each time.
0, 2, 6, 12, 72, does not have a set number it is multiplied or divided by each time.
4, 9, 14, 19, 24, adds 5 each time, it doesn't multiply
Answer:
D - 1, 3, 9, 27, 81, . . .
Step-by-step explanation:
What number would go in the blank? (3 • 5) • 2 = 3 • (__ • 2)
10
5
2
Answers
Answer:
5
Step-by-step explanation:
It's the one that's missing.
Hope I helped!
Please mark Brainliest!
Answer:
5
Step-by-step explanation:
3 × 5 = 15 × 2 = 30
3(5 × 2) = 3(10) = 30
True answer only) branlest)
Answers
Answer:
The perimeter of this triangle is 33m.
We can find this by knowing a few things.
1. All sides of this triangle are the same because all the angles are the same.
2. This is an equilateral triangle.
The first thing we need to do is find out what x equals. We can do this by taking 2 of the equations and setting them up like so...
\(( 7x - 17 ) = ( 4x - 5 )\)
Then we can plug this into a calculator and find out that x equals 4. And from there we can plug that x value into the equation. And since all sides are the same we just need to find the length of one side and multiply that by 3. So...
\(2x+3 = (2*4) +3\)
Then we do some simple math to find that one side has a length of 11m so the entire perimeter is 33.
Step-by-step explanation:
hope this helps. . .<3
good luck! UwU
Which power of 10 should be in the to make the equation true?
73.4: = 00.734
Answers
Answer:
-2 power.
Step-by-step explanation: