answer asap? my phones about to die!​

The correct answer is A. The null hypothesis is rejected in error.

In statistical hypothesis testing, a Type II error occurs when the null hypothesis is incorrectly retained or failed to be rejected when it is actually false.

In other words, a Type II error happens when the researcher concludes that there is no significant difference or relationship between variables when, in reality, there is.

It is a false negative result, as the researcher fails to detect a true effect or relationship.

Option A accurately describes Type II error, while the other options are not related to Type II error.

Option B refers to rejecting the research hypothesis, which is not a Type II error but rather a Type I error.

Option C refers to the study being underpowered, which may increase the likelihood of both Type I and Type II errors but is not a direct description of Type II error.

Option D mentions double-blinding, which is a methodological consideration and not directly related to Type II error.

Option E refers to accepting the research hypothesis in error, which is not a Type II error but rather a correct decision or Type I error.

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Answer:

1439.4702≈1439

Answer:

x = 3, JL = 17, MN = 13

Step-by-step explanation:

Given 2 intersecting chords in a circle , then

The product of the parts of one chord is equal to the product of the parts of the other chord, that is

14x = 7 × 6 = 42 ( divide both sides by 14 )

x = 3

Then

JL = x + 14 = 3 + 14 = 17

MN = 6 + 7 = 13

Answer:

23.5kg

Step-by-step explanation:

5 bags *4.7kg each = 23.5kg total

Given:

The arithmetic sequence is:

10, 12, 14, 16, ...

To find:

The function that generates the given sequence if n is an integer.

Solution:

We have,

10, 12, 14, 16, ...

Here, the first term is 10 and the common difference is:

\(d=a_2-a_1\)

\(d=12-10\)

\(d=2\)

The nth term of an arithmetic sequence is:

\(a_n=a+(n-1)d\)

Where, a is the first term, d is the common difference and \(n\geq 1\).

Putting \(a=10,d=2\) in the above formula, we get

\(a_n=10+(n-1)2\)

\(a_n=10+2n-2\)

\(a_n=8+2n\)

Therefore, the function \(a_n=8+2n, n\geq 1\) generates the sequence.

The temperature of the soda after 20 minutes is approximately -18 degrees Celsius. To find the initial temperature of the soda, we can evaluate the function T(x) at x = 0.

Substitute x = 0 into the function T(x):

T(0) = -19 + 39e^(-0.45*0).

Simplify the expression:

T(0) = -19 + 39e^0.

Since e^0 equals 1, the expression simplifies to:

T(0) = -19 + 39.

Calculate the sum:

T(0) = 20.

Therefore, the initial temperature of the soda is 20 degrees Celsius.

To find the temperature of the soda after 20 minutes, we substitute x = 20 into the function T(x):

Substitute x = 20 into the function T(x):

T(20) = -19 + 39e^(-0.45*20).

Simplify the expression:

T(20) = -19 + 39e^(-9).

Use a calculator to evaluate the exponential term:

T(20) = -19 + 39 * 0.00012341.

Calculate the sum:

T(20) ≈ -19 + 0.00480599.

Round the answer to the nearest degree:

T(20) ≈ -19 + 1.

Therefore, the temperature of the soda after 20 minutes is approximately -18 degrees Celsius.

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INCOMPLETE QUESTION

A can of soda is placed inside a cooler. As the soda cools, its temperature Tx in degrees Celsius is given by the following function, where x is the number of minutes since the can was placed in the cooler. T(x)= -19 +39e-0.45x. Find the initial temperature of the soda and its temperature after 20 minutes. Round your answers to the nearest degree as necessary.

we have appeared that any two of the three articulations being genuine suggests the third

To demonstrate that any two of the taking after articulations being genuine infers the third, we ought to demonstrate each of the three suggestions:

1. On the off chance that f is one-to-one and onto, at that point |A| = |B|.

2. In the event that |A| = |B| and f is onto, at that point f is one-to-one.

3. In the event that |A| = |B| and f is one-to-one, at that point f is onto.

Confirmation:

1. Assume that f is one-to-one and onto. We ought to demonstrate that |A| = |B|. Since f is onto, for each component y in B, there exists a component x in A such that f(x) = y.

Hence, each component in B is related to an interesting component in A. Since f is one-to-one, no two components in A are related to the same element in B. Subsequently, each component in A is related to a unique element in B.

Hence, there's a one-to-one correspondence between the components of A and B, and able to conclude that |A| = |B|.

2. Expect that |A| = |B| and f is onto. We have to demonstrate that f is one-to-one. Since f is onto, for each component y in B, there exists a component x in A such that f(x) = y.

Subsequently, each component in B is related to a component in A. Since |A| = |B|, there are no components in A that are not related to a component in B.

Subsequently, f is one-to-one since no two components in A can be related to the same component in B.

3. Expect that |A| = |B| and f is one-to-one.

We have to demonstrate that f is onto. Since f is one-to-one, no two components in A are related to the same component in B. Hence, there can be no components in B that are not related to a component in A.

Since |A| = |B|, there are no components in B that are not related to a component in A. Therefore, f is onto, since each component in B is related to an element in A.

Hence, we have appeared that any two of the three articulations being genuine suggests the third

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you have learned from the issue, in writing. List all of the situation's unknowables in writing. Set your parameters.

A mathematical statement known as an equation is composed of two expressions joined together by the equal sign. A formula would be 3x - 5 = 16, for instance. When this equation is solved, we discover that the number of the variable x is 7.

A formula that expresses the connection between two expressions on each side of a sign. Typically, it has a single variable and an equal sign. Like this: 2x - 4 Equals 2.

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Answer:

6CO2 + 6H2O → C6H12O6 + 6O2.

Step-by-step explanation:

That's the equation for photosynthesis. let me know if you have any questions.

Answer:

a.) Probability = 1/5

b.) 10 soda

Step-by-step explanation:

Probability is a game of chance.

The initial chance = 1/12

If Lucky Lucy bought five sodas and won a free one with four of the caps. The probability of that happening will be 1/5

Having a greater than 50% chance of winning a free soda means having probability greater than half. That is,

Probability > 1/2

You would have to buy (12 - 2) soda. Which is equal to 10.

The effective annual rate you'll actually be paying on the credit card is 31.38%.

To find the effective annual rate (EAR) when the interest rate is given as an APR with monthly compounding, we can use the following formula:

EAR = (1 + APR / Number of Compounding Periods)^(Number of Compounding Periods) - 1

In this case, the APR is 28.2% and the compounding is done monthly, so the number of compounding periods is 12.

EAR = (1 + 0.282 / 12)^12 - 1 = 0.3138

The effective annual rate is 0.3138, which is equivalent to 31.38% when rounded to 2 decimal places.

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Answer:

y = -4x+11

Step-by-step explanation:

x − 4 y + 1 = 0

x+1 = 4y

4y = x+1

y = 1/4x+1/4

pendiente de una recta perpendicular es el recíproco negativo

negative reciprocal 1/4x is -4x

y = -4x+1/4

Con la nueva pendiente, use la forma de intersección de la pendiente y el punto para calcular la intersección usando (2,3) :

y = mx + b or y = -4x+b

3 = -4(2) + b

3 = -8 + b

11 = b

b = 11

y = -4x+11

varsitytutorscomactmathhelphowtofindtheequationofaperpendicularline

Answer:

cause it is

Step-by-step explanation:

it just is, sorry i can't help. maybe bc there are more positive functions then negative ones?

To solve for x, we just need to compute the inverse of A (if it exists) and multiply it by b. If A is invertible, then this method will give us the unique solution to the linear system Ax=b.

To solve a linear system of the form Ax=b using inverse matrices, we can first find the inverse of matrix A (if it exists) and then multiply both sides of the equation by \(A^-1\), giving us:

\(A^-1Ax = A^-1b\)

Since\(A^-1A\) is the identity matrix I, we can simplify the left-hand side to just x:

\(x = A^-1b\)

However, it's worth noting that computing the inverse of a matrix can be computationally expensive, particularly for large matrices.

So, while using inverse matrices can be a useful technique for solving small systems, it may not be the most efficient approach for larger systems. In those cases, other techniques such as Gaussian elimination or LU decomposition may be more appropriate.

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the graphing system of linear inequalities of two variables are bounded by solid line or dashed line.

The linear inequalities of two variables are the mathematical expressions denoted by greater than > or less than< or combination of ≤ or ≥ between two algebraic terms.

the way we solve linear inequalities are same as the way in how we solve linear equation. The graph of linear inequalities of two variables are bounded by solid line or dashed line depending on the unequal sign presented.

hence, there is a difference between the graph of linear equation and linear inequalities.

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Answer:

Step-by-step explanation:

50 mins

Answer:

6.67

Step-by-step explanation:

Because in the park there are 30 people OK

15 were walking

7 were playing

6 were running.

15 + 7 + 6=28

Meaning there are still 2 people left so that is 6.67 =% of the people.

Hope it helps have a great afternoon:)

Answer: 7%

Step-by-step explanation:

15 + 7 + 6 = 28

Fraction of no activity is 2/30

divide 2/30

0.06666667

Round up

0.07 = 7%

If you multiply a certain number by 2.5, add 1.7 the expression is as follows:

2.5x + 1.7

Variables are letters use to represent numbers in a mathematical expression.

Therefore,

let the certain number = x

The certain number is multiplied by 2.5.Therefore,

Then , we add 1.7 to the product of 2.5 and x. Therefore,

The final expression is as follows:

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The equation of the tangent line to the curve y = 2x cos(n) at the point (π, -π) is y = -2x + (2π + 2nπ sin(n) - π), where m = -2 - 2nπ sin(n) and b = 2π + 2nπ sin(n) - π.

To find the equation of the tangent line, we need to find the derivative of y with respect to x, and then evaluate it at the given point (π, -π) to find the slope of the tangent line. Then we can use the point-slope form of a line to find the equation of the tangent line in the form y = mx + b.

Taking the derivative of y with respect to x, we get:

dy/dx = 2cos(n) - 2n x sin(n)

Evaluating this derivative at x = π, we get:

dy/dx |x=π = 2cos(n) - 2n π sin(n)

Substituting x = π and y = -π into the original equation, we get:

-π = 2πcos(n)

cos(n) = -1/2

Since we want the equation of the tangent line at the point (π, -π), we can substitute x = π and y = -π into the point-slope form of a line:

y - (-π) = m(x - π)

Simplifying, we get:

y = m(x - π) - π

Substituting cos(n) = -1/2, we have:

dy/dx |x=π = 2cos(n) - 2n π sin(n) = -2 - 2nπ sin(n)

Setting this equal to the slope of the tangent line, we have:

m = -2 - 2nπ sin(n)

Substituting this value of m into the equation of the tangent line, we have:

y = (-2 - 2nπ sin(n))(x - π) - π

Therefore, the equation of the tangent line is:

y = -2x + (2π + 2nπ sin(n) - π)

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Complete question:

Find the equation of the tangent line to the curve y = 2x cos(n) at the point (π, -π). The equation of this tangent line can be written in the form y = mx + b, where m and b are constants. Find the values of m and b.

Answer:

The complete question is as below:

Stacy and Melissa work as waitresses.  They both earn $7.75 per hour, plus tips. Last weekend, Stacy worked x number of hours and earned $153.95 in tips. Melissa worked y number of hours and earned $129.02 in tips.  Stacy determined that using the expression 7.75x + 153.95 + 7.75y + 129.02 will calculate the amount the girls earned together last weekend.  Select another expression the girls could also use.

A. 7.75x + y + 282.97

B. 7.75(x + y) + 282.97

C. 7.75(xy) + 282.97

D. 7.75x + 7.75y – 282.97

Option B,7.75(x + y) + 282.97  is correct

Step-by-step explanation:

Stacy already calculated total earnings of both of them with expression

7.75x + 153.95 + 7.75y + 129.02

The expression can be rewritten by simplifying it

first and foremost we can arrange the expression as follows:

7.75x+7.75y+153.95+129.02

7.75 is common to 7.75x+7.75y

7.75(x+y)+153.95+129.02

the sum of these two numbers 153.95+129.02=282.97

7.75(x+y)+282.97

From all indications,option B is the correct answer out of all options provided

Option D is obviously because of the negative sign introduced since the requirement is to compute total earnings not the difference between the two earnings

Answer: I did get a chance to look for the new one on my way back from the Senate and I will be there at the same time as the first time in the new season and then we going to go look for it and I get it to you tomorrow

Step-by-step explanation:

Answer:

x=1.34,-5.24

Step-by-step explanation:

x=1.34,5.24

Answer:

x = 4

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

The value of α that would generate the most stable forecast is 0.10.

Exponential smoothing is a forecasting method that uses a weighted average of past observations to predict future values. The weight of each past observation decreases exponentially as it gets older. The value of the smoothing constant, α, determines how quickly the weights decay and thus how much emphasis is placed on recent observations versus past observations. A larger value of α means more weight is given to recent observations, resulting in a forecast that is more responsive to changes in the data but also more volatile. Conversely, a smaller value of α means less weight is given to recent observations, resulting in a forecast that is more stable but less responsive to changes in the data.

Therefore, in order to generate the most stable forecast, we would want to choose a smaller value of α. Among the options given, the value of α that would generate the most stable forecast is 0.10. This would give relatively less weight to recent observations and result in a smoother, less volatile forecast. However, it is important to note that the optimal value of α depends on the specific time series being forecasted and must be chosen based on empirical evaluation of the forecast accuracy.

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Yes.There is a strong , positive association,so an increase in turnovers causes an increase in points for NBA players..

Given that,

This scatterplot illustrates the correlation between a player's turnover rate and their points scored during a recent NBA season. 3000 2500 2000 Points 1500 and  r= 0.92

r = 0.92 A strong positive (upward sloping) linear relationship

While a correlation of 0.10 would be a modest positive correlation, a correlation of 0.97 is a significant negative correlation.

Hence, Yes. Because there is a significant positive correlation, more turnovers result in more points for NBA players.

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When ab = 0, the zero-product property tells us that at least one of the factors (a or b) must be zero in order for the equation to hold true.

We are given that ab = 0, where a and b are variables or numbers.

According to the zero-product property, if the product of two factors is equal to zero, then at least one of the factors must be zero.

In our case, we have ab = 0. This means that the product of a and b is equal to zero.

To satisfy the condition ab = 0, at least one of the factors (a or b) must be zero. If either a or b is zero, then when multiplied with the other factor, the product will be zero.

It is also possible for both a and b to be zero, as anything multiplied by zero gives zero.

Therefore, based on the zero-product property, we can infer that either a = 0 or b = 0 when ab = 0.

In summary, when ab = 0, the zero-product property tells us that at least one of the factors (a or b) must be zero in order for the equation to hold true.

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To answer this question, we are assuming that the triangle is a right triangle, with sides (legs), a = 0.84m, and b = 0.63m.

Then, we can use the Pythagorean Theorem as follows:

Then, we have:

• c is the hypotenuse

• a, b the given legs of the right triangle

Now, to solve the equation for c, we need to take the square root from both sides of the equation:

Therefore, c = 1.05m. The result was already given in three significant figures.

In summary, the measure of the hypotenuse of the given right triangle is 1.05m.

Answer:

Top graph only

Step-by-step explanation:

A function links two set in a way that for each element from the origin set (called domain) you get one and only one element of the target set (co-domain, or range). In layman terms, once you pick your x, you get a single y. In term of graphing it it means that a vertical line of equation  touches the function either zero times (c is outside the domain, or only once (if c is in the domain. If you try it on the various functions there are intervals where you are touching the graphs twice. Or even infinite times as it happens in the last one.

Total number of red blood cells in the body is 20.8 * 10⁷

what is arithmetic?

Computation is an elementary part of mathematics that consists of the study of the parcels of the traditional operations on figures addition, deduction, multiplication, division, exponentiation, and birth of roots

Main body:

Red blood per cubic millimeter =5.2 million =5.2×10⁶

Red blood in 40 cubic millimeter of blood = 40 * 5.2×10⁶

= 20.8*10⁶*10

= 20.8 * 10⁷

because aⁿ*aˣ = aⁿ⁺ˣ.

hence , Total number of red blood cells in the body is 20.8 * 10⁷ .

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To determine whether the sequence {an} = 5n/4n + 1 is convergent or divergent, we can analyze its behavior as n approaches infinity.

First, let's rewrite the expression for the nth term of the sequence:

an = 5n / (4n + 1)

As n approaches infinity, the denominator 4n + 1 becomes dominant compared to the numerator 5n. Therefore, we can simplify the expression by neglecting the term 5n:

an ≈ n / (4n + 1)

Now, we can consider the limit of the sequence as n approaches infinity:

lim(n→∞) n / (4n + 1)

To evaluate this limit, we can divide both the numerator and denominator by n:

lim(n→∞) (1 / 4 + 1/n)

As n approaches infinity, the term 1/n approaches zero, leaving us with:

lim(n→∞) 1 / 4 = 1/4

Since the limit of the sequence is a finite value (1/4), we can conclude that the sequence {an} = 5n/4n + 1 is convergent.

In other words, as n gets larger and larger, the terms of the sequence {an} get closer and closer to the limit of 1/4. This indicates that the sequence approaches a fixed value and does not exhibit wild oscillations or diverge to infinity. Therefore, we can say that the sequence is convergent.

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