if you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if zstat=-2.28

Answer:

This is a type of statistical inference known as a measure of center

Answer:

Step-by-step explanation:

18n - 7p-15n = 5p

To solve for n first make n the subject

Group like terms

That's

18n - 15n = 5p + 7p

Simplify

3n = 12p

Divide both sides by 3 to make n stand alone

That's

3n/3 = 12p/3

We have the final answer as

Hope this helps you

Answer:

D) n = 4p

Step-by-step explanation:

18n - 7p - 15n = 5p

18n - 15n = 5p + 7p

Add like terms

3n = 12p

Divide both sides by 3

3n/3 = 12p/3

n = 4p

Answer:

78×31%= approximately 24 years

Step-by-step explanation:

If the point in question is on the line of reflection, then the point won't move. Any point on a line of reflection stays where it is.

If that same point is the center of dilation, then it also doesn't move. The center of dilation is the only point that doesn't move in a dilation.

So the two conditions are:

These two facts mean that the line of reflection must go through the center of dilation.

The first four terms of an arithmetic sequence are 5, 9, 13, 17 and the nth term formula of this sequence is 4n+1.

To find the expression for the (n-1)th term, we need to substitute (n-1) into the nth term formula.

So, the nth term formula is 4n+1.

Substituting (n-1) for n, we get:

4(n-1)+1 = 4n-3

Therefore, the expression for the (n-1)th term of an arithmetic sequence is 4n-3.

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Answer:

Option A is the correct option.

Step-by-step explanation:

As the graph of ( f + g ) ( x ) is a line. So, ( f + g ) ( x ) is linear which means x² of f ( x ) and x² of g ( x ) get cancelled on adding . They must be equal and opposite in sign.

So, Option A is correct.

Hope this helps..

Best regards!!

Answer:

N'(x)=90 In(43)*43^x-90 In(50)*43^x /50^x

Step-by-step explanation:

Answer:

N'(x)=90 In(43)*43^x-90 In(50)*43^x /50^x

Step-by-step explanation:

Im sorry if that doesnt make sense

Answer: y = 20.48

Step-by-step explanation:

To get rid of the denominator under the y you must multiply the entire equation by 4.

y = 20.48

That's all :)

Answer:

20.48 :)

Step-by-step explanation:

To find y you need to do 5.12 multiplies by 4 which is 20.48. Hope this helps <3

Answer:

I think that the answer is 32 cupcakes. I am sorry if this is wrong, but go subscribe to me at SSSniperwolf and LittleLia.

Step-by-step explanation:

The correct answer is B. 6 e^7x/7 - ∫e^7x/7 6x dx.

In the formula uv - ∫v du, u represents the first function to differentiate, and v represents the second function to integrate. Applying this formula to the given integral, we have:

u = 6x    (the first function to differentiate)

v = e^7x    (the second function to integrate)

Now, we differentiate the first function u and integrate the second function v:

du/dx = 6    (derivative of 6x with respect to x)

∫v dx = ∫e^7x dx = e^7x/7    (integral of e^7x with respect to x)

Using the formula uv - ∫v du, we can rewrite the integral as:

∫6x e^7x dx = u * v - ∫v du = 6x * e^7x - ∫e^7x du = 6x * e^7x - ∫e^7x * 6 dx

Simplifying the expression, we get:

∫6x e^7x dx = 6x * e^7x - 6 * ∫e^7x dx = 6 e^7x * x - 6 * (e^7x/7) = 6 e^7x/7 - ∫e^7x/7 6x dx

Therefore, option B. 6 e^7x/7 - ∫e^7x/7 6x dx is the correct choice.

Now, evaluating ∫6xe^7x dx:

From the previous derivation, we have:

∫6x e^7x dx = 6 e^7x/7 - ∫e^7x/7 6x dx

Integrating the expression, we obtain:

∫6xe^7x dx = 6 e^7x/7 - (6/7) ∫e^7x dx = 6 e^7x/7 - (6/7) * (e^7x/7)

Simplifying further, we get:

∫6xe^7x dx = 6 e^7x/7 - 6 e^7x/49

So, ∫6xe^7x dx is equal to 6 e^7x/7 - 6 e^7x/49.

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No, the presence of an effect does not necessarily imply that error variance will go away.

The presence of an effect does not necessarily imply that error variance will go away. In fact, error variance is an inherent part of any statistical model and represents the amount of variation in the response variable that is not explained by the predictor variables.

Even if a predictor variable has a significant effect on the response variable, there may still be some unexplained variation in the response that is attributable to error variance.

It is important to take into account and control for error variance in any statistical analysis, as it can affect the precision and accuracy of the estimates of the model parameters and can also influence the interpretation of the results.

One way to control for error variance is to use appropriate statistical methods, such as analysis of variance (ANOVA), regression analysis, or other modeling techniques that take into account the variability in the data.

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The measure of an exterior angle of the regular polygon is given by 180 - (2340/2n) to the nearest degree.

The sum of the interior angles of a regular polygon is 2340°. Find the measure of an exterior angle to the nearest degree.

To find the measure of an exterior angle of a regular polygon, use the formula

`exterior angle = 360/n`,

where n is the number of sides of the polygon.

For instance, a regular polygon with 6 sides has six interior angles, each measuring 120 degrees. Using the formula

`exterior angle = 360/6`,

we get the exterior angle of the regular hexagon to be 60 degrees.

If the sum of the interior angles of a polygon with n sides is 2340°, the formula for calculating the measure of an interior angle `a` is given as:

a = (n - 2) × 180/n

Thus, a = (n - 2) × 180/n = 2340/n.

Now, using the formula for finding the exterior angle of a regular polygon, we have:

exterior angle = 360/n = 180 - a/2

Using the value of a we found earlier and substituting it into the formula, we get:

exterior angle = 180 - (2340/2n)

Therefore, the measure of an exterior angle of the regular polygon is given by `180 - (2340/2n)`.

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The probability that a student who has a brother also has a sister is 2/7 or approximately 0.2857.

To find the probability that a student who has a brother also has a sister, we need to use the concept of conditional probability.

Let's first find the probability of a student having both a brother and a sister. According to the problem, there are 2 students who have both a brother and a sister. Therefore, the probability of a student having both a brother and a sister is:

P(Brother and Sister) = 2/23

Now, let's find the probability of a student having a brother:

P(Brother) = 7/23

Using the formula for conditional probability, we can find the probability that a student who has a brother also has a sister:

P(Sister|Brother) = P(Brother and Sister) / P(Brother)

Substituting the values we found, we get:

P(Sister|Brother) = (2/23) / (7/23) = 2/7

This means that if we randomly select a student who has a brother, the probability that they also have a sister is about 0.2857.

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Answer:

b = -4

Step-by-step explanation:

The formula for b is

       -b

x = -------  and so  -b = 2ax, or b = -2ax

       2a

if the axis of symmetry is known, but we need b, substitute the given x and a values to find b:

b = -2(2) = -4

b = -4

The function is then y = 2x^2 - 4x + 10

The rejection region in a one-tailed hypothesis test with a significance level of 0.05 is the upper 5% of the distribution. The correct answer is option A.

Thus, the rejection region in a one-tailed hypothesis test with a significance level of 0.05 is the upper 5% of the distribution.

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The second plot that could not always be generated from a dot plot is a histogram. Thee correct option is c) dot plot, histogram.

A histogram is a graphic depiction of a frequency distribution with continuous classes that has been grouped. It is an area diagram, which is described as a collection of rectangles with bases that correspond to the distances between class boundaries and areas that are proportionate to the frequencies in the respective classes.

The second plot that could not always be generated from the first plot in each pair is:

c) dot plot, histogram

A dot plot is a type of plot where each data point is represented by a dot along a number line. It shows the frequency or distribution of a dataset.

A histogram, on the other hand, represents the distribution of a dataset by dividing the data into intervals or bins and displaying the frequencies or relative frequencies of each interval as bars.

While a dot plot can be converted into a histogram by grouping the data points into intervals and representing their frequencies with bars, it is not always possible to reverse the process and generate a dot plot from a histogram. This is because a histogram does not provide the exact positions of individual data points, only the frequencies within intervals.

Therefore, the second plot that could not always be generated from a dot plot is a histogram.

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Van 't Hoff's law, also known as the law of osmotic pressure, states that the magnitude of the osmotic pressure is directly proportional to the concentration of solute particles in a solution at a given temperature.

Van 't Hoff's law is an important concept in chemistry and thermodynamics. It explains the relationship between osmotic pressure and the concentration of solute particles in a solution. According to the law, the osmotic pressure of a solution is directly proportional to the number of solute particles in the solution, regardless of the type of solute. This means that if the concentration of solute particles in a solution increases, the osmotic pressure also increases, and vice versa. This law has numerous applications, particularly in the field of biology, where it is used to explain the movement of water and nutrients in and out of cells. For example, when a plant cell is placed in a hypertonic solution, water moves out of the cell, causing it to shrink. On the other hand, when a plant cell is placed in a hypotonic solution, water moves into the cell, causing it to expand. Understanding Van 't Hoff's law is therefore critical in many fields of science, particularly in biology, chemistry, and chemical engineering.

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Answer:

The time the patient expected to survive after diagnosis is 29 years.

Step-by-step explanation:

It is provided that the mean survival time after diagnosis for a certain disease is 15 years with a standard deviation of 5 years.

That is,

\(\mu=15\\\sigma=5\)

An individual's predicted survival time is a = 2.8 standard deviations beyond the mean.

Compute the time the patient expected to survive after diagnosis as follows:

\(X=\mu+a\sigma\)

    \(=15+(2.8\times 5)\\\\=15+14\\\\=29\)

Thus, the time the patient expected to survive after diagnosis is 29 years.

Answer:

10 teenagers

Step-by-step explanation:

using the formula i took the sample size of 30, then added all of the cumulative frequency to get to 650

no of teenagers = 10

a. The prime numbers in this list are 5 and 7. b. There are no prime numbers in this list. c. The prime numbers in this list are 31 and 17. d. The prime numbers in this list are 61 and 2.

a. In the list 5, 7, 12, 11, the prime numbers are 5, 7, and 11. Prime numbers are numbers greater than 1 that have only two factors, 1 and themselves.

b. In the list 14, 6, 3, the prime number is 3. The other numbers have more than two factors, making them not prime.

c. In the list 31, 17, 9, 15, the prime numbers are 31 and 17. The numbers 9 and 15 have more than two factors, so they are not prime.

d. In the list 782, 61, 2, the prime numbers are 61 and 2. Number 2 is the smallest prime number, and 61 has only two factors, 1 and 61. The number 782 has more than two factors, so it is not prime.

To summarize, the prime numbers in each list are: a. 5, 7, 11; b. 3; c. 31, 17; d. 61, 2.

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A linear system with 3 equations and 4 variables by representing it with an augmented matrix and bringing the matrix to reduced row-echelon form can be solved.

A mathematical representation of a system based on the application of a linear operator is known as a "linear system" in systems theory. Ordinarily, compared to nonlinear systems, linear systems display much simpler features and properties. The automatic control theory, signal processing, and telecommunications all heavily rely on linear systems as a mathematical abstraction or idealisation.

Linear systems, for instance, are frequently used to model the propagation medium for wireless communication systems. An operator, H, that converts an input, x(t), into an output, y(t), a kind of black box description, can be used to describe a general deterministic system.

The superposition principle, or alternatively both the additivity and homogeneity properties, must be satisfied by a system to be considered linear, and only then.

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The expression for a linear equation in thee slope-intercept form is ,

y = mx + b

the slope = m= (y2-y1)/ (x2-x1)

y-intercept is (0, b)

___________________

Rearreging tha expresion

y = 3x + 4

The rate is the slope (m) = 3

__________________________

Answer

the constant, in this case, is 3

a. residual is much larger than the rest of the residual values.

In regression analysis, an outlier refers to an observation that significantly deviates from the expected pattern or trend of the data. Specifically, it is an observation whose residual (the difference between the observed value and the predicted value) is much larger than the residuals of the other observations.

Outliers can have a considerable impact on the regression model, affecting the estimated coefficients and overall model fit. It is important to identify and assess outliers to determine if they are influential or if they should be treated or removed to ensure the reliability and validity of the regression analysis.

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The system of linear inequalities to model the situation is 10x + 20y ≤ 100 and y > 2x

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

Using the following representations:

We have the following system of inequalities from the given statements

10x + 20y ≤ 100

y > 2x

Hence, the system of inequalities is 10x + 20y ≤ 100 and y > 2x

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Answer:

The two lines are neither parallel nor perpendicular

Step-by-step explanation:

Generally, we have the equation of a straight line as;

y = mx + b

where m is the slope of the line and b is the y intercept of the line

Now, we express the two given equations in this form

We have this as;

7y = x + 5

y = 1/7(x) + 5/7

For the second equation, we have;

y = 7x - 4; this is already expressed

the slope of the first line is 1/7

the slope of the second line is 7

when two lines are parallel, their slopes are equal

when two lines are perpendicular, the product of their slopes is -1

As we can see, both cases does not occur in this system of equations

So, we can conclude that both lines are neither parallel nor perpendicular

The population is growing as the births are more than deaths in an year.

Increases in a population's or a dispersed group's membership are referred to as population growth.

Given:

To find: Is population growing or shrinking?

Finding:

Hence the population is growing as the births are more than deaths in an year.

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Answer:

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

r3ktforgood  

the correct answer is 5 6 and 7

Step-by-step explanation:

The correct option  is option C: ∣s−82∣<4, which describes all possible values of s.

The correct option  is option C: ∣s−82∣<4, which describes all possible values of s

Option A (∣s - 82∣ = 4) would indicate that all the scores are exactly 4 units away from 82, which is not the case as some scores could be less than 82 or greater than 86.

Option B (∣s + 82∣ = 4) would indicate that all the scores are exactly 4 units away from -82, which is not relevant to the given situation.

Option C (∣s - 82∣ < 4) correctly indicates that the scores can vary within a range that is less than 4 units away from 82. This range includes scores between 78 and 86, as mentioned in the question.

Option D (∣s + 82∣ < 4) would indicate that all the scores are exactly less than 4 units away from -82, which is not relevant to the given situation.

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