will mark brainlest ​

A critical value, z subscript alpha (zα), denotes the boundary or cutoff point for a statistical test where the level of significance, also known as alpha (α), is set.

A critical value, z subscript alpha (zα), denotes the value at which the probability of observing a test statistic in the tail(s) of the sampling distribution equals the pre-determined significance level (alpha).

The critical value can be defined as the value that is compared with the parameter value in the hypothesis test to determine whether the null hypothesis will be rejected. If the value of the parameter is less than the critical value, the null hypothesis is rejected.

However, if the measured value is higher than the critical value, reject the null hypothesis and accept the alternative hypothesis. In other words, cropping divides the image into acceptable and unacceptable areas. If the value of the index falls within the rejection range, the rejection of the fact is rejected, otherwise the negative hypothesis is rejected.

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Answer:

$3.95m + $8.95b = 47.65

Step-by-step explanation:

I think I don't it right but if not sorry

The unknown biomolecule is a protein.

The unknown biomolecule is a protein. Benedict's test is commonly used to detect reducing sugars such as glucose, which produce a blue color. Since the color remained blue in the test, it suggests that the unknown biomolecule does not contain reducing sugars. On the other hand, the biuret test is used to detect the presence of peptide bonds, which are characteristic of proteins. When the unknown biomolecule was subjected to the biuret test, the color changed to purple, indicating the presence of peptide bonds and thus confirming that the unknown biomolecule is a protein.

Proteins are complex macromolecules composed of amino acids linked together by peptide bonds. They play crucial roles in various biological processes, serving as structural components, enzymes, antibodies, and signaling molecules, among others. Benedict's test, which relies on the reduction of copper ions by reducing sugars, is not specific for proteins. Therefore, the lack of color change indicates the absence of reducing sugars in the unknown biomolecule. However, the biuret test specifically detects peptide bonds, which are unique to proteins. The formation of a purple color in the biuret test confirms the presence of proteins in the unknown biomolecule.

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Part a:  What quantity order size would minimize the total annual inventory cost? Total Annual Inventory Cost = Annual Ordering Cost + Annual Carrying Cost At minimum Total Annual Inventory Cost, the formula for the Economic Order Quantity (EOQ) is used. EOQ formula is given below: EOQ = sqrt((2DS)/H)Where, D = Annual DemandS = Ordering cost

The company should place an order for 168 boxes at a time in order to minimize the total annual inventory cost.Part b: Determine the minimum total annual inventory cost.Using the EOQ, the company can calculate the minimum total annual inventory cost. The Total Annual Inventory Cost formula is:Total Annual Inventory Cost = Annual Ordering Cost + Annual Carrying CostAnnual Ordering Cost = (D/EOQ) × S = (16,800/168) × $60 = $6,000Annual Carrying Cost = (EOQ/2) × H = (168/2) × $30 = $2,520Total Annual Inventory Cost = $6,000 + $2,520 = $8,520Therefore, the minimum Total Annual Inventory Cost would be $8,520.Part c: Would you recommend the manager to use your quantity from part (a) rather than 300 boxes? Justify your answer (by determining the total annual inventory cost for 300 boxes)

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Answer:

y= -3/8x + 1

Step-by-step explanation:

-4 = x1

5 = y1

y-y1=m(x-x1)

y-5 = -3/8(x-(-4)

y-5 = -3/8x + -3/2

+5 +5

y= -3/8x + 1

y = -3/8x + 3.5

I suggest you check this by graphing the two equations on the Desmos graphing calculator first just to make sure. Hope this helps, have a good day.

The χ2 test is not the oldest statistical test still in use. While it is an important and widely used statistical test, it is not the oldest. The χ2 test, also known as the chi-squared test, was developed by Karl Pearson in the late 19th century. It is used to determine whether there is a significant association between two categorical variables.

The χ2 test is a statistical test used to analyze categorical data. It is based on the principle of comparing observed frequencies in a contingency table to the expected frequencies. The test evaluates whether there is a significant association between two categorical variables or if any observed deviations are due to chance.

The χ2 test is commonly used in various fields such as biology, social sciences, market research, and quality control. It can be applied to analyze survey responses, compare proportions between groups, examine the relationship between variables, and assess the goodness of fit of a theoretical distribution to observed data.

However, the claim that the χ2 test is the oldest statistical test still in use is not accurate. There are several other statistical tests that predate the χ2 test, such as the t-test, developed by William Sealy Gosset (aka "Student") in the early 20th century, and the correlation coefficient, developed by Francis Galton in the late 19th century. These tests and others have been instrumental in the development of statistics and continue to be widely used today alongside the χ2 tes.

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Answer: 3 Pencils

Step-by-step explanation:

In order to know how many packages Zayed can make, we need a number that is a factor of 72 and 24, so that the 72 pencils and the 24 calculators can be divided evenly.

So, if there wre 2 packages, there would be 72 / 2 = 36 pencils 24/ 2= 12 calculators in each package. This creates packages, but isn't the gratest number of packages!

To find the greatest number of identical packeges, we want to found the greatest common factor of 72 and 24

To do so, lets find the factors of 72 and 24

72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

24: 1, 2, 3, 4, 6, 8, 12, 24

the gratest common number factor of 72 and 24 is 24. in math notation this looks like:

gcf (72, 24)=24

the gratest number of identical packages can make is 24

To find the umber of pencils in each pacage, we need to dovide the total number of pencils by the number of pakages:

72 / 24 = 3.

there will be 3 pencils each package

Answer:

the answer is -x/2 -1

if its not then beat me up for that- :^

The set of all FIU students would be the entire population of FIU students, which includes every individual who is currently enrolled as a student at Florida International University.

This would include undergraduate and graduate students, full-time and part-time students, and students of all majors and programs. The set would be a complete representation of the entire FIU student body, including all of its characteristics and attributes.

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Answer:

8

Step-by-step explanation:

280/35=8

Answer:

8 hours.

Step-by-step explanation:

280/35 = 8

Their experimental design was Independent variable was contact plates placed on the tile for less than 5 seconds. Option D is the correct answer.

The independent variable is the factor that is being manipulated by the experimenter. In this case, the experimenter is manipulating the length of time the plates are on the tiles. The dependent variable is the factor that is being measured by the experimenter. In this case, the experimenter is measuring the amount of bacteria on the plates.

The control is a group of subjects that are not exposed to the independent variable. In this case, the control group is the floor tiles that have been inoculated with chicken broth. The control group is used to compare the results of the experimental group, which is the group of plates that have been dropped on the tiles.

The standardized variables are the factors that are kept the same for both the experimental group and the control group. In this case, the standardized variables are the type of food, the surface of the tiles, and the temperature of the room. These factors are kept the same so that the only difference between the two groups is the length of time the plates are on the tiles.

This experimental design is a well-controlled experiment because the experimenter has taken steps to ensure that the only difference between the two groups is the length of time the plates are on the tiles. This will allow the experimenter to make accurate conclusions about the effect of the independent variable on the dependent variable. Option D is the correct answer.

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The following question may be like this:

The Myth busters conducted an experiment to test the five second rule. Which of the following represented their experimental design?

Answer:

e

Step-by-step explanation:

He has exceeded the 20% equity threshold. He is exempt from paying PMI because his present equity is 38.38%.

Once your property has 20% equity, you can often ask to cease paying PMI after you've purchased it. When your equity reaches 22%, PMI is frequently immediately terminated. Only conventional loans are subject to PMI. Mortgage insurance for other sorts of loans frequently comes in different forms.

calculation

calculating the equivalent monthly payments

282,000 is the principal, and 5% each year, or 0.416667% per month, or 0.00416667, is the rate of interest. There are 360 installments total (30 years X 12)

Total monthly payments equal 1513.84 for the equated monthly mortgage and 299.17 for the PMI, for a total of $1,813.01 for the equated monthly mortgage and PMI.

He must continue paying the PMI until he gets 20% equity. now calculate his equity percentage.

He has exceeded the 20% equity threshold. He is exempt from paying PMI because his present equity is 38.38%.

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Answer:

Step-by-step explanation:

Hey :)

Keep in mind:

y = mx + b

Where m = slope and b = y-intercept

Since we are told:

y = 9x - 3

This means m = 9 and b = -3

Therefore the slope is 9 and y-intercept is at (0,-3)

Answer:

Step-by-step explanation:

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

Step-by-step explanation:

To find the x-intercepts of the quadratic function f(x) = -2(x - 1)² + 16, we need to set f(x) equal to zero and solve for x.

-2(x - 1)² + 16 = 0

Dividing both sides by -2:

(x - 1)² - 8 = 0

Now, let's isolate the squared term:

(x - 1)² = 8

To solve for x, we can take the square root of both sides:

√((x - 1)²) = ±√8

Simplifying:

x - 1 = ±√8

Now, let's add 1 to both sides to isolate x:

x = 1 ± √8

The x-intercepts of the quadratic function f(x) = -2(x - 1)² + 16 are of the form 1 ± √8.

Therefore, the values for a, b, and c are as follows:

a = 1

b = 0

c = 8

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The top of the ladder touches a height of 8 feet on the wall. To determine how high on the wall the top of the ladder touches, we can use the Pythagorean theorem.

In this case, the ladder forms the hypotenuse of a right triangle, and the base of the wall and the height on the wall form the other two sides.

Let's denote the height on the wall as 'h'. According to the problem, one end of the ladder is 6 feet from the base of the wall, so the base of the triangle is 6 feet.

We can set up the equation using the Pythagorean theorem:

\((6)^2 + (h)^2 = (10)^2\)

Simplifying the equation:

36 + \(h^2\) = 100

\(h^2\) = 100 - 36

\(h^2\)= 64

Taking the square root of both sides:

h = √64

h = 8

Therefore, the top of the ladder touches a height of 8 feet on the wall.

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Answer:

101

Step-by-step explanation:

Answer:101

Step-by-step explanation:

The curvature is zero at the origin, but f(x) is not twice continuously differentiable function at x = 0, because f''(x) does not exist at x = 0. Therefore, the statement is not necessarily true.

An inflection point is a point on a curve where the sign of the curvature changes. At an inflection point, the curvature may be zero, but it may also be undefined.  Moreover, even if the curvature is defined and equal to zero at an inflection point, it does not necessarily imply that the function is twice continuously differentiable at that point.

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A fast food restaurant estimate that 45% of their customers buy drinks with their purchases. Last week, 6200 customers did not buy soft drinks. They have a total of 11272 customers.

when in a percentage we take 100%

if 45% take soft drinks with their purchases

then the other 55% did not take soft drinks with their purchases

therefore, we have 6200 customers who did not buy soft drinks with their purchases.

now we know that 11272 are there total customers

therefore, now we have to subtract 6200 from 11272

we get 5072.

therefore 5072 customers who buy soft drinks with their purchases.

A fast food restaurant estimate that 45% of their customers buy drinks with their purchases. Last week, 6200 customers did not buy soft drinks. They have a total of 11272 customers

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To find the chi-square value for 27 degrees of freedom and a .05 area in the right tail, we need to use a chi-square distribution table. The table provides critical values for different levels of significance (alpha) and degrees of freedom.

Since we are interested in the right tail, we need to look at the area to the right of the critical value, which is equal to the significance level (alpha). In this case, alpha = .05, so we look for the critical value that corresponds to an area of .05 in the right tail.

Using the chi-square distribution table, we find that the critical value for 27 degrees of freedom and a .05 area in the right tail is 43.195. Therefore, the answer is A) 43.195.
In summary, the chi-square value for 27 degrees of freedom and a .05 area in the right tail is 43.195.

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Answer:

The answer is -23.

Step-by-step explanation:

substitute x with -4. multiply and add regularaly.

Answer:

x = - 11.25 should be the answer

Answer: 14.73091

Step-by-step explanation:

The square root of 217, (or root 217), is the number which when multiplied by itself gives the product as 217. Therefore, the square root of 217 = √217 = 14.730919862656235.

False.

If rank(A) = 4 in a 5 by 5 matrix A, it means that the column space of A has dimension 4. In other words, the columns of A span a subspace of dimension 4 in R^5.

In linear algebra, the rank of a matrix A is the dimension of the column space of A, which is the subspace of R^n spanned by the columns of A. The column space of A is a subspace of R^n, so its dimension can be at most n. Therefore, if rank(A) = n, then the columns of A form a basis of R^n, which means that they span the entire space R^n and are linearly independent.

In the case where rank(A) < n, the columns of A do not span the entire space R^n, which means that they cannot form a basis of R^n. Instead, they span a subspace of R^n of dimension equal to the rank of A. This subspace can be thought of as a "shadow" of R^n that is cast by the columns of A.

In the specific case of a 5 by 5 matrix A with rank(A) = 4, the columns of A span a subspace of dimension 4 in R^5. This means that the columns of A cannot span the entire space R^5, since their dimension is less than 5. Therefore, the columns of A cannot form a basis of R^5. However, they do span a subspace of R^5 of dimension 4, and this subspace is an important object of study in linear algebra.

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Answer:

3x - 13

Step-by-step explanation:

The perimeter is just the distance around the triangle. We have all three sides, so we can just add them together to get the total distance.

(x-6) + (x+2) + (x-9)

Group:

x + x + x - 6 + 2 - 9

3x - 13