For a 0.250M solution of K_(2)S what is the concentration of potassium?

The test to use when there's an independent group design and ordinal data is the Kruskal Wallis test

Given: Independent group and ordinal data. To find which test to use.

What's the Kruskal Wallis test?

The Kruskal Wallis test is used when you have one independent variable with two or further situations and an ordinal dependent variable. In other words, it's thenon-parametric interpretation of ANOVA and a generalized form of the Mann- Whitney test system since it permits two or further groups.

The Kruskal Wallis test is used when you have one independent variable with two or further situations and an ordinal dependent variable. In other words, it's thenon-parametric interpretation of ANOVA and a generalized form of the Mann- Whitney test system since it permits two or further groups.

The null thesis for the Kruskal- Wallis test simply states that there are no methodical or harmonious differences among the treatments being compared.

How to calculate the Kruskal Wallis test?

The computation of the Kruskal- Wallis statistic requires

Hence as is mentioned for an independent group design and ordinal data so we use the Kruskal Wallis test.

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We can use the Kruskal Wallis test when we have an independent group design and ordinal data.

We are given an independent group design and ordinate data.

We need to tell which test to use on them.

The Kruskal Wallis test is used when you have one independent variable with two or more situations and one ordinal dependent variable. In other words, it is an interpretation of ANOVA table and a generalized form of the Mann- Whitney test system.

The null hypothesis for the Kruskal- Wallis test tells us that:

There are no methodical or harmonious differences among the treatments being compared.

Therefore, we can use the Kruskal Wallis test when we have an independent group design and ordinal data.

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]]The explanator variable is amount of homework given and the response variable is student's test score.

Variable:

In math variable is an alphabet which is used to represent the unknown number.

Given,

A  teacher wants to determine if the amount of homework given to her students can be used to predict the students' test scores

Here we need to identify the explanatory variable and the response variable

While we looking in to the given situation, the we have identified that the two variables are used here is,

=> homework given.

=> Test score

While analyzing the variable we have identified that the explanatory variable defines the situation so it is homework given and the response variable defines the result of the scenario that is the students score.

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Answer:

x = 10

Step-by-step explanation:

OA = OD ( both radii of the circle )

OD = OB + BD = x + 16

OB is at right angles to OB ( line from centre to midpoint of chord is right )

Using Pythagoras' identity in right triangle ABO

OA² = OB² + AB² , that is

(x + 16)² = x² + 24²

x² + 32x + 256 = x² + 576 ( subtract x² from both sides )

32x + 256 = 576 ( subtract 256 from both sides )

32x = 320 ( divide both sides by 32 )

x = 10

Answer:

-27

Step-by-step explanation:

if f(6) you plug it into x

-3(6)-9

-18-9

-27

The value of x or length of FD int the figure is  75.

image attached below,

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

In a right triangle, the hypotenuse is the longest side, an "opposite" side is the one across from a given angle, and an "adjacent" side is next to a given angle.

This is similarities in sides questions. To solve make equation.

JY = 42

JS = 42 + 63 = 105

JD = 50

JF = 50 + x

Using the sides,

52/105 = 50/50+x

(42)(50+x) = (50)(105)

2100 + 42x = 5250

42x = 5250 - 2100

42x = 3150

x = 3150/42

x = 75.

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Since y_1(0) = 1, it satisfies the initial condition. However, y_2(0) = 0 does not satisfy the initial condition, as it should be y(0) = 1. Therefore, only y_1(t) is a solution of the initial value problem.

To verify that both y_1(t) = 1 - t and y_2(t) = -t^2/4 are solutions of the initial value problem, we first need to understand what the problem is. An initial value problem is a differential equation that includes an initial condition. In this case, we can assume that the initial condition is y(0) = 1.
Now, let's substitute both y_1(t) and y_2(t) into the differential equation and see if they satisfy the initial condition. The differential equation is not provided, but assuming it is y'(t) = -t/2, we have:
y_1'(t) = -1
y_2'(t) = -t/2
Substituting y_1(t) and y_2(t) into the differential equation gives:
y_1'(t) = -1

= -t/2 (when t = 2)
y_2'(t) = -t/2

= -t/2 (for all t)
Thus, both y_1(t) and y_2(t) satisfy the differential equation. Now, let's check if they satisfy the initial condition.
y_1(0) = 1 - 0

= 1
y_2(0) = -0^2/4

= 0
In conclusion, y_1(t) = 1 - t is the only solution that satisfies the differential equation and initial condition, while y_2(t) = -t^2/4 is not a solution since it does not satisfy the initial condition.

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The equation 3x = 6.4 can be solved for x by dividing both sides of the equation by 3: 3x/3 = 6.4/3; x = 2.13

So, for 3x and 6.4x to be equal, x must be equal to 2.13. This means that you need to multiply the number 6.4 by 2.13 to equal 3. The equation 3x = 6.4 represents the relationship between two variables, x and 3x. We are trying to find the value of x that would make 3x equal to 6.4. To do this, we divide both sides of the equation by 3. Dividing both sides of an equation by the same number does not change the relationship between the variables; it only scales down the variable's value by the same factor.

So, by dividing both sides of the equation by 3, we get:

3x/3 = 6.4/3

x = 2.13

Finally, to make 6.4x equal to 3, we need to divide 6.4 by 2.13: 6.4 / 2.13 = 3. So, we need to multiply 6.4 by 2.13 to equal 3.

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The volume of the cylinder is 127.16π m².

Volume is the space occupied by a solid shape.

To calculate the volume of the shape, we use the formula below

Formula:

Where:

From the question,

Substitute these values into equation 1

Hence, the right option is A. 127.16π m².

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The volume of the cylinder is 399.28 cubic feet

From the question, we have the following parameters that can be used in our computation:

Radius = 3.4 cm

Height = 11 cm

Using the above as a guide, we have the following:

r = 3.4 cm

h = 11 cm

The volume of the cylinder is calculated as

V = πr²h

Substitute the known values in the above equation, so, we have the following representation

V = 3.14 * 3.4² * 11

Evaluate

V = 399.28

Hence, the volume is 399.28 cubic feet

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Answer:

4 is the answer to your question

Step-by-step explanation:

Answer:

a. 2

c. efx = 20 = 2.22

x. 9

b.1/2×20 = 10

Step-by-step explanation:

it is 2 because it has the highest frequency

The surface area of the figure is equal to 641.1 square inches.

The figure comprises of a smaller and a bigger cone, the sum of their surface area is the surface area of the figure.

Surface area of cone = πr[r + √(h² + r²)]

surface area of smaller cone = 22/7 × 6in[6in + √(8² + 6²)]

surface area of smaller cone = 301.7 square inches

Height of the bigger cone = √(12² - 6²) = 10.4in

surface area of bigger cone = 22/7 × 6in[6in + √(10.4² + 6²)]

surface area of bigger cone = 339.4 square inches

surface area of the shape = 301.7 + 339.4

surface area of the shape = 641.1 square inches.

Therefore, the surface area of the figure is equal to 641.1 square inches.

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Step-by-step explanation:

From n=1, to n=4, plug this in the sigma notation

The first four terms of this series are

-4,-8/3,-16/9,-32/27

b. Since -1<r<1, the series diverge

c. The sum of an infinite geometric series is equal to

\( \frac{a}{1 - r} \)

Where a is the initial value and r is the rate

a=-4

r =2/3

\( \frac{ - 4}{1 - \frac{2}{3} } = \frac{ - 4}{ \frac{1}{3} } = - 12\)

Answer:

-28 and 22

Step-by-step explanation:

two number that heve product -168 and sum -22 are -28 and 6

-28*6=-168

-28 + 6=-22

The coordinates of the midpoint of line segment PQ after rotating it 90 degrees clockwise around the origin are (5/2, -3/2).

To find the coordinates of the midpoint of the line segment PQ after rotating it 90 degrees clockwise around the origin, we can follow these steps:

Determine the original midpoint of PQ:

The midpoint formula states that the coordinates of the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) are given by:

Midpoint = ((x1 + x2)/2, (y1 + y2)/2)

For PQ with endpoints P(1,5) and Q(-4,0), the original midpoint is:

Midpoint = ((1 + (-4))/2, (5 + 0)/2)

= (-3/2, 5/2)

Rotate the original midpoint 90 degrees clockwise:

To rotate a point (x, y) 90 degrees clockwise around the origin, we swap the x and y coordinates and negate the new x coordinate. So, for the original midpoint (-3/2, 5/2), after rotating 90 degrees clockwise, the new coordinates of the midpoint are:

Rotated Midpoint = (5/2, -3/2)

Therefore, the coordinates of the midpoint of line segment PQ after rotating it 90 degrees clockwise around the origin are (5/2, -3/2).

This means that the midpoint, which was initially in the second quadrant (negative x and positive y), is now in the fourth quadrant (positive x and negative y) after the rotation.

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Answer:

3x² + 2x + 3 / b

Step-by-step explanation:

This is the correct answer. Hope this helps

Answer:

There isn't enough information

Step-by-step explanation:

In the table, on the side with a we can see that there is not one with 6 as a possible term. Therefore, we cannot find the term for b or c since you need both a and c to find b.

The statement: A line that is parallel to two parallel lines would provide a counterexample.

Option A is the correct answer.

We have,

The statement "Alternate interior angles are never supplementary" is false, so we are looking for a situation where alternate interior angles are in fact supplementary.

The correct answer is:

A line that is parallel to two parallel lines would provide a counterexample.

In this case,

The alternate interior angles formed between the two parallel lines and the transversal (the parallel line) would be congruent, and since congruent angles are supplementary, the alternate interior angles would be supplementary.

Thus,

A line that is parallel to two parallel lines would provide a counterexample.

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Answer:

f(x) =x^2 - 3x^2 - 6x + 8.

Step-by-step explanation:

Answer:

A, B, D, E

Step-by-step explanation:

Given expression:

When multiplying decimals, multiply as if there are no decimal points:

\(\implies 6 \times 154 = 924\)

Count the number of digits after the decimal in each factor:

Therefore, there is a total of 5 digits.

Put the same number of total digits after the decimal point in the product:

\(\implies (0.06) \cdot (0.154)=0.00924\)

-----------------------------------------------------------------------------------------------

Answer option A

\(\boxed{6 \cdot \dfrac{1}{100} \cdot 154 \cdot \dfrac{1}{1000}}\)

When dividing by multiples of 10 (e.g. 10, 100, 1000 etc.), move the decimal point to the left the same number of places as the number of zeros.

Therefore:

\(\implies 6 \cdot \dfrac{1}{100} \cdot 154 \cdot \dfrac{1}{1000}=(0.06) \cdot (0.154)\)

Therefore, this is a valid answer option.

Answer option B

\(\boxed{6 \cdot 154 \cdot \dfrac{1}{100000}}\)

Multiply the numbers 6 and 154:

\(\implies 6 \times 154 = 924\)

Divide by 100,000 by moving the decimal point to the left 5 places (since 100,000 has 5 zeros).

\(\implies 6 \cdot 154 \cdot \dfrac{1}{100000}=0.00924\)

Therefore, this is a valid answer option.

Answer option C

\(\boxed{6 \cdot (0.1) \cdot 154 \cdot (0.01)}\)

Again, employ the technique of multiplying decimals by first multiplying the numbers 6 and 154:

\(\implies 6 \cdot 154 = 924\)

Count the number of digits after the decimal in each factor:

Therefore, there is a total of 3 digits.

Put the same number of digits after the decimal point in the product:

\(\implies 0.924\)

Therefore, as (0.06) · (0.154) = 0.00924, this answer option does not equal the given expression.

Answer option D

\(\boxed{6 \cdot 154 \cdot (0.00001)}\)

Again, employing the technique of multiplying decimals.

As there are a total of 5 digits after the decimals:

\(\implies 6 \cdot 154 \cdot (0.00001)=0.00924\)

Therefore, this is a valid answer option.

Answer option E

\(\boxed{0.00924}\)

As we have already calculated, (0.06) · (0.154) = 0.00924.

Therefore, this is a valid answer option.

The success rates of the three treatments in preventing cardiac events are approximately 90.91% for the stress management program, 79.41% for the exercise program, and 70% for usual heart care.

a. Two-way table:
| Treatment | Cardiac Events | No Cardiac Events |
|-----------|-----------------|----------------------|
| Stress Management | 3 | 30 |
| Exercise | 7 | 27 |
| Usual Care | 12 | 28 |
b. The success rates of the three treatments in preventing cardiac events can be calculated as the percentage of people in each group who did not experience a cardiac event.
- Stress management: 90.9% success rate (30/33)
- Exercise: 79.4% success rate (27/34)
- Usual care: 70% success rate (28/40)
Therefore, the stress management program had the highest success rate in preventing cardiac events, followed by the exercise program and then usual care.

Stress management and its impact on reducing heart attacks. Let's analyze the study results and create a two-way table, as well as calculate the success rates of the three treatments in preventing cardiac events.
a. Two-way table:
| Treatment          | Cardiac Events | No Cardiac Events | Total |
|--------------------|----------------|-------------------|-------|
| Stress Management  | 3              | 30                | 33    |
| Exercise Program   | 7              | 27                | 34    |
| Usual Heart Care   | 12             | 28                | 40    |
| Total              | 22             | 85                | 107   |
b. Success rates of the three treatments in preventing cardiac events:
1. Stress Management:
Success rate = (No Cardiac Events / Total) * 100
Success rate = (30 / 33) * 100
Success rate ≈ 90.91%
2. Exercise Program:
Success rate = (No Cardiac Events / Total) * 100
Success rate = (27 / 34) * 100
Success rate ≈ 79.41%
3. Usual Heart Care:
Success rate = (No Cardiac Events / Total) * 100
Success rate = (28 / 40) * 100
Success rate = 70%

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Answer:

Step-by-step explanation:

√100 - √28

√100 = 10

10 - √28

10 - √(4 × 7)

10 - √4√7

√4 = 2

10 - 2√7

Answer:

182.5

Step-by-step explanation:

divide 365 by 2 getting your answer

Answer:

B

Step-by-step explanation:

Perimeter is the sum of all the lengths of its sides.

Perimeter of the figure

= 9x +8x -2 +17x -6 +5x +1

= 9x +8x +17x +5x -2 -6 +1

= 39x -7

Thus, the correct answer is option B.

Within-treatment variation: Variation among individuals of different groups. Between-treatment variation: Variation between individuals in different groups. Variation explained by factors included in the ANOVA model: Variation attributed to the factors or variables being studied. Variation that is not part of the ANOVA model: Residual or error variation not accounted for by the model.

What is ANOVA?

ANOVA stands for Analysis of Variance. It is a statistical method used to analyze and compare the means of two or more groups or treatments to determine if there are significant differences among them.

The within-treatment variation reflects variation among individuals of different groups.

Within-treatment variation refers to the variability observed within each group or treatment condition in an analysis of variance (ANOVA) model. It measures the differences or variations among individuals within the same group or treatment condition. This variation is typically attributed to random or uncontrolled factors that affect individuals within each group separately.

On the other hand, the variation between individuals in different groups is referred to as the between-treatment variation. It measures the differences or variations observed between the group means or treatment conditions in an ANOVA model. This variation is of interest as it helps determine if there are significant differences among the groups being compared.

The variation explained by factors included in the ANOVA model refers to the portion of the total variation that can be attributed to the specific factors or variables being studied in the analysis. It represents the variation that can be explained or accounted for by the factors included in the model.

Lastly, the variation that is not part of the ANOVA model refers to the residual or error variation. It represents the remaining variation that cannot be explained by the factors or variables included in the ANOVA model. This variation is often attributed to uncontrolled or unmeasured factors, measurement errors, or other sources of variability that are not accounted for in the model.

In summary:

Within-treatment variation: Variation among individuals of different groups.

Between-treatment variation: Variation between individuals in different groups.

Variation explained by factors included in the ANOVA model: Variation attributed to the factors or variables being studied.

Variation that is not part of the ANOVA model: Residual or error variation not accounted for by the model.

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Answer:

(3x + 7y)(3x - 7y)

Step-by-step explanation:

This is the difference of two squares.

9x² - 49y² = (3x + 7y)(3x - 7y)

Answer:

a.

Step-by-step explanation:

i don't know the explanation step by step

Answer:

2, 3, 4, 5

Step-by-step explanation:

Answer:

I believe 4 of these are correct,

answer choice, 2,3,4and

Step-by-step explanation:

2 and 3 are correct because of the inverse of the parallel theorem and answer choice 4 is just a straight line has an angle of 180. Since angle 3 corresponds to angle 7 also meaning they are congruent. We can say angle 1 and 7 add up to 180. As for answer 5, it is the same side interior thereom

Hello!

453 millions

= 453 000 000