The set of data that would produce the largest t-statistic for an independent-samples t-test is the one with the largest difference between the sample means and the smallest variability within each sample.When other factors are held constant, the t-statistic for an independent-samples t-test is given by the following formula:
t=(x1 − x2)/ SEwhere x1 and x2 are the means of the two samples, and SE is the standard error of the difference between the means. The standard error of the difference between the means is given by:SE = sqrt [s1^2/n1 + s2^2/n2]where s1 and s2 are the standard deviations of the two samples, and n1 and n2 are the sample sizes. Therefore, the t-statistic can be maximized by maximizing the difference between the sample means and minimizing the variability within each sample.Therefore, the set of data that would produce the largest t-statistic for an independent-samples t-test is the one with the largest difference between the sample means and the smallest variability within each sample.
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Please help with this question
Answer:
The correct answer is 7/20
16 15 5 209 parking charges at superior parking garage are $5.00 for the first hour and $1.50 for each additional 30 minutes. if margo has $12.50, what is the maximum amount of time she will be able to park her car at the garage?
margo will able to park the car for 6 hrs according to constraints given
What is linear equation in one variable and how to solve one?
Linear equation in one variable is an equation of degree one and having one variable. and to solve the linear equation we separate the constants and variable and find the value of variable.
We are given that,
Parking charges at superior parking garage are $5.00 for the first hour and $1.50 for each additional 30 minutes.
Margo had $12.5
Let the number of hours she can park be 'x'
For each hour she has to pay additional $1.50
Hence the equation becomes
5+1.5x=12.5
1.5x=7.5
x=5
Hence she can park the car for the 6 hours
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A gold mine has two elevators, one for equipment and another for the miners. The equipment elevator descends 5 feet per second. The elevator for the miners descends 14 feet per second. One day, the equipment elevator begins to descend. After 20 seconds, the elevator for the miners begins to descend. What is the position of each elevator relative to the surface after another 16 seconds? At that time, which elevator is deeper?
Answer:
need the same question
What are the coordinates of point p on the directed line segment from A to B such that P is 1/4 the length of the line segment from A to B
Answer:
(-11/4, -1/2)
Step-by-step explanation:
Too much to explain
Talia is packing a moving box. She has a square-framed poster with an area of 4 square feet. The cube-shaped box has a volume of 14 cubic feet. Will the poster lie flat in the box? Explain?
Answer:
Length of sides of poster = 2 Ft
Length of sides of box = 2.41 Ft
Since the box has a longer side than the poster, the poster will lie flat when placed in the box.
Step-by-step explanation:
In order to determine if the poster will lie flat in the box or not, we will determine the length of the sides of the poster and the box, if the length of the side of the square poster is smaller than that of the box, it will lie flat. This is calculated as follows:
Area of poster = 4 square feet
Area of poster = (Length)²
4 = (Length)²
∴ Length = √(4)
Length of poster = 2 Ft
Volume of box = 14 cubic feet
Volume of box = (Length)³
14 = (Length)³
∴ Length = ∛(14)
Length = 2.41 Ft
∴ Length of sides of poster = 2 Ft
Length of sides of box = 2.41 Ft
Since the box has a longer side than the poster, the poster will lie flat when placed in the box.
4.8 multiplied to 10 to the power -9
Answer:
000000004.8
Hope it help!
Please solve this question.
Answer: 2
Step-by-step explanation:
Current Age Age in future (x years)
Brother 1: 15 x + 15
Brother 2: 22 x + 22
The product of their ages in the future is 408:
(x + 15)(x + 22) = 408
x² + 37x + 330 = 408 Expanded
x² + 37x - 78 = 0 Subtracted 408 from both sides
(x + 39)(x - 2) = 0 Factored
x + 39 = 0 x - 2 = 0 Applied Zero Product Property
x = -39 x = 2 Solved for x
↓
Disregard since "future" years cannot be negative
A hat company wants to create a cylindrical travel case to protect its beach sun hats using the following pattern.
net drawing of a cylinder is shown as two circles with diameters labeled 15 inches and a rectangle with a height labeled 5 inches
How many square inches of leather will be necessary to create the travel case? Approximate using π = 3.14.
412.13 square inches
588.75 square inches
1,648.5 square inches
1,884 square inches
Answer:
To create the cylindrical travel case, we need approximately 588.75 square inches of leather.
what is 700,000 is blank times as much as 700
Answer:
700,000 is 1000 times as much as 700
Step-by-step explanation:
700,000 divided by 700 is 1000
Answer:
The answer wouldn't be 100 but it would be 1000
Hoped I helped
Find the values of x and y.
Answer:
Y = 69
X = 42
Hope this helps!
12(−1.4m+0.4)=
0.7m + 0.2
-0.7m + 0.2
2.8m + 0.8
-2.8m + 0.8
Answer:
m = 0.28571428571
or 0.29(to the nearest tenth)
Step-by-step explanation:
First, distribute
12(−1.4m+0.4)=
-16.8m + 4.8 =
Now move the constant to the right.
-16.8m + 4.8 =
-16.8m = -4.8 =
Now divide,
-16.8m = -4.8 =
m = 0.28 or 0.29
(02.04 HC)
A random sample of online makeup tutorial videos and sales of makeup was measured, and the computer output for regression was obtained:
Coefficients Standard Error t Stat P-value
Intercept −7.567857143 0.426240686 −17.7549 1.04E-05
Makeup Tutorial Videos 0.917857143 0.028166777 32.58652 5.11E-07
R-sq. = 99.53% R-sq. (adj) = 99.44%
Part A: Use the computer output to determine the LSRL. Identify all the variables used in the equation. (3 points)
Part B: What proportion of the variation in makeup sales is explained by its linear relationship to makeup tutorial videos? Explain. (4 points)
Part C: Determine if increased makeup sales were caused by online makeup tutorial videos. Explain your reasoning. (3 points)
Answer:
Explained below.
Step-by-step explanation:
A.
The least square regression line is:
\(\hat y=-7.567857143+0.917857143\cdot x\\\\\approx \\\\\hat y=-7.568+0.918\cdot x\)
Here,
y = estimated sales of makeup
x = number of online makeup tutorial videos
a = -7.568 = intercept
b = 0.918 = slope of the regression line
B.
The coefficient of determination R² specifies the percentage of the variance in the dependent-variable (Y) that is forecasted or explained by linear regression and the forecaster variable (X, also recognized as the independent-variable).
So, the proportion of the variation in makeup sales that can be explained by its linear relationship to makeup tutorial videos is 99.53%.
C.
Consider the LSRL.
The slope of the regression line is positive, i.e. there is a positive relationship between the makeup sales and the online makeup tutorial videos.
So, with one unit increase in the online makeup tutorial videos the makeup sales goes up by 0.918 units.
Thus, it can be said that the increased makeup sales were caused by online makeup tutorial videos.
The ratio of Monarch butterflies to Queen butterflies at a butterfly farm was 7:5. If there are no additional butterflies at the farm, what is the ratio of Queen butterflies to the total number of butterflies at the farm?
a
12:5
b
12:7
c
5:12
d
7:12
Answer:
C. 5:12
Explanation:
f(x)=-3x^2+9x-8 Find f(5)
Answer:
-38
Step-by-step explanation:
You replace the x with 5.
turns it into -3 (5)^2+9(5)-8
-3(25)+45-8
-75+45=-30-8=-38
-3(5)^2+9(5)-8
answer:
-38
En el mercado del satisfactor X hay 10,000 individuos idénticos, cada uno con una función de demanda definida por Qdx = 12 – Px y 1,000 productores idénticos del satisfactor X, cada uno con una función de oferta dada por Qsx = 20 Px
Answer:
Px = $4
Step-by-step explanation:
Given that:
En el mercado de satisfacción X hay 10,000 individuos idénticos, cada uno con una función de demanda definida por Qdx = 12 - Px y 1,000 productores idénticos de X satisfactorio, cada uno con una función de oferta dada por Qsx = 20 Px
El precio de equilibrio y la cantidad de equilibrio se pueden determinar de la siguiente manera;
Qdx = 10000(12-Px)
Qdx = 120000 - 10000Px
Qsx = 1000(20 Px)
Qsx = 20000 Px
El punto de equilibrio para completar el enunciado, cuando Qdx = Qsx es:
Qdx = Qsx
120000 - 10000 Px = 20000 Px
120000 = 20000 Px + 10000 Px
120000 = 30000 Px
Px = \(\mathbf{ \dfrac{120000}{30000}}\)
Px = $4
Find the area of hexagon DEFGHI.
Step-by-step explanation:
Break it up into two trapezoids as shown
area = trap1 + trap2
= 2 * (7+3) / 2 + 3 * ( 7 + 3) / 2 = 10 + 15 = 25 units^2
Find the measure of angle B.
67 degrees
77 degrees
12.3 degrees
118.3 degrees
Answer:
B is 77 degrees sorry for the photo quality
you spin a spinner equally divided into seven parts, and then you spin it again. three parts are red, two parts are pink, one part is speckled, and one part is blue. what is the probability of the spinner stopping on a blue section on the first spin and then a red section on the second spin?
The probability of the spinner stopping on a blue section on the first spin and then a red section on the second spin is 3/49.
To find the probability of the spinner stopping on a blue section on the first spin and then a red section on the second spin, we need to multiply the probabilities of each event happening independently.
Step 1: Find the probability of landing on a blue section on the first spin.
There is 1 blue section out of 7 total sections, so the probability is 1/7.
Step 2: Find the probability of landing on a red section on the second spin.
There are 3 red sections out of 7 total sections, so the probability is 3/7.
Step 3: Multiply the probabilities from step 1 and step 2.
(1/7) * (3/7) = 3/49.
So, the probability of the spinner stopping on a blue section on the first spin and then a red section on the second spin is 3/49.
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determine if the following equation is a polynomial.. if so determine what type
6x^1/2+4xa
Answer: For an expression to be a polynomial term, any variables in the expression must have whole-number powers (or else the "understood" power of 1, as in x1, which is normally written as x). A plain number can also be a polynomial term. In particular, for an expression to be a polynomial term, it must contain no square roots of variables, no fractional or negative powers on the variables, and no variables in the denominators of any fractions.
Step-by-step explanation:
Select all that are undefined.
The expressions csc(π), cot(π/2), cot(π), csc(0°), and sec(90°) are undefined.
Since the sin(π) is 0, the calculation csc(π) results in division by zero, which is undefinable.
Due to the infinite tangent of π/2, cot(π/2) results in division by zero, making it undefinable.
Due to the infinite tangent of π, cot(π) divides by zero and is hence undefinable.
Since the sine of 0° is zero, csc(0°) is undefined since it divides by zero.
Since the cosine of 90° is zero, sec(90°) results in division by zero, which is an undervalue.
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-
(-6, 2); y<-x-4
-
(6,2); y<-x-4
Answer:
111111111111111111111111111111111111111111Step-by-step explanation: btw its not ams
Compute the Wronskian determinant W(f, g) of the functions f(t) = Int and g(t) = t² at the point t = e². (a) 0 (b) 2e4 (c) (d) (e) 3e² -3e² -2e4
The Wronskian determinant W(f, g) at t = e² is:
W(f, g) = 2e^(3e²) - e^(e² + 4)
To compute the Wronskian determinant W(f, g) of the functions f(t) = e^t and g(t) = t^2 at the point t = e², we need to evaluate the determinant of the matrix:
W(f, g) = | f(t) g(t) |
| f'(t) g'(t) |
Let's calculate the Wronskian determinant at t = e²:
f(t) = e^t
g(t) = t^2
Taking the derivatives:
f'(t) = e^t
g'(t) = 2t
Now, substitute t = e² into the functions and their derivatives:
f(e²) = e^(e²)
g(e²) = (e²)^2 = e^4
f'(e²) = e^(e²)
g'(e²) = 2e²
Constructing the matrix and evaluating the determinant:
W(f, g) = | e^(e²) e^4 |
| e^(e²) 2e² |
Taking the determinant:
W(f, g) = (e^(e²) * 2e²) - (e^4 * e^(e²))
= 2e^(3e²) - e^(e² + 4)
Therefore, the Wronskian determinant W(f, g) at t = e² is:
W(f, g) = 2e^(3e²) - e^(e² + 4)
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Let X be a nonempty set, and put A={E⊆X:E is countable or X\E is countable }. You may assume that A is a σ-algebra. Let C denote the collection of singleton sets, i.e., the collection of sets of the form {x} with x∈X. (a) Explain why C⊆A. (b) Show that the σ-algebra generated by C is A.
To show that C⊆A, we need to demonstrate that every singleton set {x} is either countable or its complement X{x} is countable. We have shown that the σ-algebra generated by the collection of singleton sets C is equal to A
(a) The collection C of singleton sets, i.e., sets containing only one element, is a subset of the σ-algebra A defined as A={E⊆X:E is countable or X\E is countable}. This is because every singleton set is countable, and for any singleton set {x}, the complement X{x} is also countable.
(b) We need to show that the σ-algebra generated by C, denoted as σ(C), is equal to A. To prove this, we need to demonstrate that A satisfies the three properties required for a σ-algebra: it contains the empty set, is closed under complements, and is closed under countable unions.
(a) To show that C⊆A, we need to demonstrate that every singleton set {x} is either countable or its complement X{x} is countable. A singleton set is countable since it contains only one element. Additionally, the complement X{x} is countable because it contains all the elements of X except for x, and hence has at most the same cardinality as X, which is assumed to be nonempty.
(b) To prove that σ(C) = A, we need to show that A satisfies the three properties of a σ-algebra: it contains the empty set, is closed under complements, and is closed under countable unions.
A contains the empty set: Since the empty set is countable, it is included in A.
A is closed under complements: For any set E in A, either E is countable or X\E is countable. In either case, the complement of E is countable, and thus A is closed under complements.
A is closed under countable unions: Let {E_i} be a countable collection of sets in A. We need to show that their union ∪E_i is also in A. Since each E_i is countable or its complement is countable, the countable union of these sets will also be either countable or have a countable complement. Therefore, A is closed under countable unions.
Since A satisfies all the properties required for a σ-algebra and contains C, the σ-algebra generated by C, denoted as σ(C), must be a subset of A. Conversely, A contains the empty set, is closed under complements, and closed under countable unions, which means it is a σ-algebra. Thus, σ(C) = A.
Therefore, we have shown that the σ-algebra generated by the collection of singleton sets C is equal to A, which is defined as A={E⊆X:E is countable or X\E is countable}.
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I’ll give 100 points please help look at the picture for question
Answer:
17-7
Step-by-step explanation:i think its 17-7 Hope this helps !
Solve the inequality.
6x-4>20
Answer:
x > 4
Add four to both sides
6x - 4 + 4 > 20 + 4
6x > 24
Divide both sides by 6
6x/6 > 24/6
x > 4
~Hope this helps~
Which of the three situations given below is best modeled by an exponential function?
I. A bacteria culture doubles in size every day.
II. A plant grows by 1 inch every 4 days.
III. The population of a town declines by 5% every 3 years.
I. The bacteria culture doubles in size every. day
A cat can run 30 mph at this rate how many minutes would it take a cat to run 1.5 miles
Answer:
Use a proportion::
time/dist = time/distance
t/1.5 = 1/30
t = 1.5/30
t = 15/300
t = 1/20 = 5/100 = 0.05
So A-0.05 is the final answer
Step-by-step explanation:
ik this was 3 yrs ago
Select the best answer regarding the effects of Carbon monoxide: a. The affinity between CO and hemoglobin is about the same as oxygen. b. The central chemoreceptors will detect the reduction in oxygen delivered to the cells and will increase their firing rate. c. CO results in less oxygen loading hemoglobin but unloading is not changed. d. A small amount of CO in the air will not reduce arterial PO2 levels enough to be sensed by the peripheral chemoreceptors.
The best answer regarding the effects of carbon monoxide is option c, CO results in less oxygen loading hemoglobin but unloading is not changed.
Carbon monoxide binds up more tightly to the hemoglobin as compared to the oxygen molecules. This reduces the oxygen-carrying capacity of the blood and results in less oxygen loading onto hemoglobin.
However, once oxygen is already bound to hemoglobin, CO does not significantly affect its release or unloading. Therefore, option c is the most accurate statement among the given choices.
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Find gcf 30c^7 +44c^4
Answer:
2\(c^{4}\)
Step-by-step explanation:
Find GCF 30c^7 +44c^4
We see that 30 and 44 have a common factor of 2. c^7 and c^4 have a common factor of c^4.
So, GCF is 2\(c^{4}\)
Hari's weekly allowance varies depending on the number of chores he does. He received $18 in allowance the week he did 20 chores, and $12 in allowance the week he did 8 chores. Write an equation for his allowance in slope-intercept form.
The equation of his allowance in slope-intercept form is y = 0.5x + 8
He received $18 in allowance the week he did 20 chores.
He received $12 in allowance the week he did 8 chores.
The ordered pairs will be (8,12) and (20,18)
The slope intercept form is
y = mx + b
Where m is the slope
b is the y intercept
m = \(\frac{y_2-y_1}{x_2-x_1}\)
Substitute the values in the equation
m = (18-12)/(20-8)
m = 6/12
= $0.5 per chores
Now we have to find b,
Substitute the value of any ordered pair in the slope intercept form
12 = 0.5×8+b
12 = 4+b
b = 12-4
b = 8
Hence, the equation of his allowance in slope-intercept form is y = 0.5x + 8
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