*I will mark you brainliest!!!!!*

Answer:

Can’t really understand your question!!

I can explain the process of finding the test statistic for testing the equality of variances for three brands. Please note that the exact calculation depends on the specific statistical test you are using.

To test the equality of variances among three brands, you can use the Bartlett's test or Levene's test. Here, I will explain the steps for performing Levene's test:

Step 1: Set up hypotheses

- Null hypothesis (H0): The variances of the three brands are equal.

- Alternative hypothesis (HA): The variances of the three brands are not equal.

Step 2: Calculate the test statistic

Levene's test statistic is based on the absolute deviations of each observation from the group mean. The test statistic is given by:

\[ W = \frac{(N-k)}{(k-1)} \times \frac{\sum_{i=1}^{k}N_i(\bar{Z_i} - \bar{Z})^2}{\sum_{i=1}^{k}\sum_{j=1}^{N_i}(Z_{ij} - \bar{Z_i})^2}\]

where:

- N is the total number of observations.

- k is the number of groups (in this case, three brands).

- Ni is the number of observations in the i-th group.

- Zi is the absolute deviation of each observation in the i-th group from the group mean.

- Z is the overall mean of all observations.

Step 3: Conclusion

Compare the calculated test statistic with the critical value from the appropriate distribution (e.g., F-distribution). If the calculated test statistic is greater than the critical value, you would reject the null hypothesis and conclude that the variances are not equal. Conversely, if the calculated test statistic is less than the critical value, you would fail to reject the null hypothesis and conclude that there is not enough evidence to suggest a difference in variances among the three brands.

Remember to round your answer to three decimal places as requested.

It's important to note that without specific data, I can't provide an actual calculation or conclusion. The above explanation provides a general overview of the steps involved in testing the equality of variances for three brands.

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Answer:

The answer is below

Step-by-step explanation:

A football team scored 3 touchdowns, 3 extra points, and 4 field goals.  

a. Write an expression to represent the total points the football team scored.  

b. Write another expression that is equivalent to the one written above.  

c. If each touchdown is worth 6 points, each extra point is 1 point, and each field goal is 3 points, how many total points did the team score?  

Solution:

a) Let t represent the number of points for a touchdown, e represent the number of points for the extra point and f represent the number of points for a field goal.

Total points = 3(t) + 3(e) + 4(f) = 3t + 3e + 4f

b) Total points = 3t + 3e + 4f   OR

Total points = t + t + t + e + e + e + f + f + f + f  OR

Total points = 3(t + e) + 4f

c) Total points = 3(t + e) + 4f = 3(6 + 1) + 4(3) = 3(7) + 4(3)

Total points = 21 + 12 = 33 points

The sum of the points the team has from different point gaining options

give the total number of points the team scores.

Reasons:

The number of touchdowns by the football team, t = 3

Number of extra points by the football team, e = 3

Number of field goals by the team, f = 4

Therefor, the total number of points, P = 3·t + 3·e +4.f

The specified editor is an equation editor, which can be used to write mathematical equations.

Using an equation editor, we have;

\(\mathrm{The \ total \ points \ the \ football \ team \ scored } = 3 \cdot t + 3 \cdot e + 4 \cdot f\)

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Jill earned $207 last week for picking 370 containers.

According to the information given, Jill picks corn and is paid at a piecework rate.

She receives 55 cents per container for the first 300 containers picked, and then she receives 60 cents per container for every container picked beyond 300.

Last week, Jill picked 370 containers. To calculate how much she earned, we can break it down into two parts:

the first 300 containers and the remaining 70 containers.

For the first 300 containers, Jill earns 55 cents per container. So, the amount she earned for the first 300 containers is:

300 containers x $0.55/container = $165

For the remaining 70 containers, Jill earns 60 cents per container. So, the amount she earned for the remaining 70 containers is:

70 containers x $0.60/container = $42

To find out the total amount Jill earned, we add the amounts she earned for the first 300 containers and the remaining 70 containers:

$165 + $42 = $207

Therefore, Jill earned $207 last week for picking 370 containers.

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The following statements can be concluded if ∠ABC and ∠CBD are a linear pair:

B. ∠ABC and ∠CBD are supplementary.

D. ∠ABC and ∠CBD are adjacent angles.

In Mathematics, the linear pair theorem states that the measure of two angles would add up to 180° provided that they both form a linear pair. This ultimately implies that, the measure of the sum of two adjacent angles would be equal to 180° when two parallel lines are cut through by a transversal.

According to the linear pair theorem, ∠ABC and ∠CBD are supplementary angles because BDC forms a line segment. Therefore, we have the following:

∠ABC + ∠CBD = 180° (supplementary angles)

m∠ABC ≅ m∠CBD (adjacent angles)

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Answer:

\(V=\pi r^2h=\pi *6^2*19\) ≈ \(2148.8\)

Let me know if you found this helpful! It means a lot!

we can conclude that Ariel takes approximately 0.5233 pages of notes per hour of class.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

To find the number of pages of notes Ariel takes during an hour of class, we need to calculate her average rate of note-taking per hour of class for each of the two periods and then find the overall average rate.

For the first period:

Average rate of note-taking = Total pages of notes taken / Total hours of class

Average rate of note-taking = 18 pages / 34.4 hours

Average rate of note-taking = 0.5233 pages per hour (rounded to four decimal places)

For the second period:

Average rate of note-taking = Total pages of notes taken / Total hours of class

Average rate of note-taking = 45 pages / 86 hours

Average rate of note-taking = 0.5233 pages per hour (rounded to four decimal places)

Notice that the two average rates of note-taking are the same. This means that Ariel takes an average of 0.5233 pages of notes per hour of class, regardless of the specific period.

Therefore, we can conclude that Ariel takes approximately 0.5233 pages of notes per hour of class.

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Yes, given explanation is correct.if the calculated test statistic is less than -1.645 then the null hypothesis can be rejected.

For test the claim that the proportion of people who smoke is less than 22.5%.

A one-tailed test of hypothesis can be used. Specifically, a one-sample z-test for a proportion can be used where:

Null hypothesis: p ≥ 0.225 (the proportion of people who smoke is equal to or greater than 22.5%)

Alternative hypothesis: p < 0.225 (the proportion of people who smoke is less than 22.5%)

The test statistic for the one-sample z-test for a proportion is calculated as:

z = (p - P0) / √[(P0 × (1 - P0)) / n]

where p is the sample proportion, P0 = the hypothesized proportion under the null hypothesis and n = The sample size.

If the calculated test statistic falls in the rejection region which is determined by the chosen significance level (e.g., alpha = 0.05) then the null hypothesis can be rejected and it can be concluded that there is evidence to support the claim that the proportion of people who smoke is less than 22.5%.

For a one-tailed test with alpha = 0.05, the critical value is -1.645.

Hence, if the calculated test statistic is less than -1.645 then the null hypothesis can be rejected.

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Answer:

Here's the answer lil jit

Step-by-step explanation:

As asked in the question, the volume of the rectangular prism with half a cylinder removed is 6036.5 cm³. Option D is correct.

A figure is shown, there is a rectangular prism with half a cylinder removed, we have to determine the volume of the figure shown,

The radius of the half cylinder is given as:

Radius = 20- 2*5 /2

radius  = 5 cm

Now, the Volume of the figure is given as;

Volume = Volume of the rectangular prism - Volume of the half cylinder
Volume = 50*8*20 - 1/2 * 3.14* 5²*50
Volume = 6036.5 cm³

Thus, the requried volume of the rectangular prism with half a cylinder removed is 6036.5 cm³. Option D is correct.

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The value of the double integral ∫∫sin(4x) dxdy over the region ω bounded by x−y=0, x−y=3π, x 2y=0, and x 2y=π^2 is (1/32)*sin(4π²) - (1/8)*cos(4π²) - (1/8).

To evaluate the double integral ∫∫sin(4x) dxdy over the region ω bounded by x−y=0, x−y=3π, x 2y=0, and x 2y=π^2, we need to set up the integral in terms of the appropriate limits of integration.

The region ω can be represented by the following inequalities:

0 ≤ x ≤ π^2

0 ≤ y ≤ x/2

We can now set up the integral as follows:

∫∫ω sin(4x) dxdy = ∫₀^(π²) ∫₀^(x/2) sin(4x) dy dx

Integrating with respect to y first, we have:

∫∫ω sin(4x) dxdy = ∫₀^(π²) [y*sin(4x)]|₀^(x/2) dx

= ∫₀^(π²) (x/2)*sin(4x) dx

Now, we can integrate with respect to x:

∫∫ω sin(4x) dxdy = [-(1/8)*cos(4x) + (1/32)*sin(4x)]|₀^(π²)

= (1/32)*sin(4π²) - (1/8)*cos(4π²) - (1/32)*sin(0) + (1/8)*cos(0)

Simplifying further, we have:

∫∫ω sin(4x) dxdy = (1/32)*sin(4π²) - (1/8)*cos(4π²) - (1/8)

This is the value of the double integral ∫∫sin(4x) dxdy over the given region ω.

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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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There are 360 black counters and 306 white counter in 20:17 ratio.

Let's denote the number of black counters by B and the number of white counters by W. We know that the ratio of black to white counters is 20:17, which means that:

B/W = 20/17

We also know that there are 54 more black counters than white counters, which means that:

B = W + 54

We can use substitution to solve for B. Substituting the second equation into the first equation, we get:

(W + 54)/W = 20/17

Cross-multiplying, we get:

17(W + 54) = 20W

Expanding the left side, we get:

17W + 918 = 20W

Subtracting 17W from both sides, we get:

918 = 3W

Dividing both sides by 3, we get:

W = 306

Now we can use the second equation to find B:

B = W + 54 = 306 + 54 = 360

Therefore, there are 360 black counters in the bag.

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It is critical to open a compass with over half the way in order for the arcs formed to meet for perpendicular bisector.

A perpendicular bisector would be a line that cuts a line segment in half and forms a 90-degree angle at the intersection point. In other words, a perpendicular bisector separates a line segment now at midpoint, forming a 90-degree angle.

Now, consider an example;

When you wish to build a perpendicular line on a line segment, like line AB, you do the following;

A line AB appears to be bisected perpendicularly as a result. The arcs would not have met if the compass is opened less than half way down line AB.

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Answer:

A.

Step-by-step explanation:

The formula for trying to find the area of a circle is Area= r^2

Sooo:

Area=3.14 x 18 x 18

18 x 18 is the first part of the equation

=324

Then:

3.14(pi) x 324 = 1017.36 = 1017 ft2

290 people Apple wants to visit the store every day after Layla’s marketing campaign.

Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

Both linear equations with one variable and those with two variables exist.

Given Apple wants to increase the number of people who enter in stores in London every day,

let X be Apple’s target amount of people,

380 is double the difference between, the target amount of people which apple wants to visit the store every day and 100

difference between the target amount of people and 100 is

X - 100

double the equation = 2(X - 100)

the equation is equal to 380

2(X - 100) = 380

divide both sides by 2

X - 100 = 380/2

X - 100 = 190

X = 190 + 100

x  = 290

Hence  Apple’s target amount of people is 290.

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Juan is 13 years old.

Andrés is 34 years old.

We have,

Let's assume that Juan's age is x.

Then, we know that Andrés' age is x + 21.

We also know that the sum of their ages is 47:

x + (x + 21) = 47

Simplifying the equation:

2x + 21 = 47

Subtracting 21 from both sides:

2x = 26

Dividing by 2:

x = 13

So Juan is 13 years old.

To find Andrés' age, we can substitute Juan's age into the equation we used earlier:

x + 21 = 13 + 21 = 34

Thus,

Juan is 13 years old.

Andrés is 34 years old.

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The complete question.

Juan is 21 years younger than Andrés and we know that the sum of their ages is 47. How old is each of them?

Answer:

(6, 4.5)

Step-by-step explanation:

6 if halfway between 12 and 0 and 4.5 is halfway between 6 and 3

i hope this helped :))

Answer:

The anser is (5, 4) oh and thank you for the points, i am very greatful for them

(a) The probability of getting four of a kind in a five-card poker hand is approximately 0.024%. (b) The probability of getting two pairs (not four of a kind or a full house) is approximately 4.753%. (c) The probability of getting a full house (three of a kind and a pair) is approximately 0.144%. (d) The probability of getting a straight (a set of five consecutive values) is approximately 0.392%.

(a) To calculate the probability of getting four of a kind, we consider the number of ways to choose the rank for the four cards, the number of ways to choose the remaining card, and the total number of possible five-card hands.

(b) For two pairs, we calculate the number of ways to choose the ranks for the two pairs and the remaining card, and divide it by the total number of possible five-card hands.

(c) For a full house, we calculate the number of ways to choose the rank for the three cards of the same rank, the rank for the pair, and divide it by the total number of possible five-card hands.

(d) To calculate the probability of a straight, we consider the number of possible combinations of five consecutive ranks and divide it by the total number of possible five-card hands.

These probabilities are approximate as they assume a standard deck of 52 cards and do not take into account variations in poker rules or card distribution.

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The probability that the random variable will take on a value between 31 and 35 is 0.2620 or 26.20%.

To solve this problem, we need to standardize the values of 31 and 35 using the formula:

z = (x - μ) / σ

where x is the value we want to find the probability for, μ is the mean, and σ is the standard deviation.

For x = 31:

z = (31 - 30) / 5 = 0.2

For x = 35:

z = (35 - 30) / 5 = 1

Now, we can use a standard normal distribution table or calculator to find the probabilities corresponding to these z-values. The probability of getting a value between 31 and 35 is the difference between the probability of getting a z-value less than 1 and the probability of getting a z-value less than 0.2:

P(31 ≤ x ≤ 35) = P(z ≤ 1) - P(z ≤ 0.2)
= 0.8413 - 0.5793
= 0.2620

Therefore, the probability that the random variable will take on a value between 31 and 35 is 0.2620 or 26.20%.

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The equation that illustrates the amount to be paid for the number of kilometers will be 7.25 + 7x.

Fixed rate for taxi = 7.25

Additional charges per kilometers = 7

Number of kilometers = x

Therefore, the equation that illustrates the amount to be paid for the number of kilometers will be:

= 7.25 + (7 × x)

= 7.25 + 7x

Therefore, the equation is 7.25 + 7x.

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Answer:

10.5%

Step-by-step explanation:

2/19=.1052... = 10.52% round to 10.5%

Answer:

10.5%

Step-by-step explanation:

2/19=10.52=10.5

Answer:

Yes, These numbers 10, 7, and 13 can form a triangle

Step-by-step explanation:

Let us use this theorem to solve the question

∵ The numbers are 10, 7, 13

∵ 10 + 7 = 17

∵ 17 > 13

∴ The sum of 10 and 7 is greater than the 3rd number 13

∵ 10 + 13 = 23

∵ 23 > 7

∴ The sum of 10 and 13 is greater than the 3rd number 7

∵ 7 + 13 = 20

∵ 20 > 10

∴ The sum of 7 and 13 is greater than the 3rd number 10

∵ The sum of every two numbers is greater than the 3rd number

→ By using the theorem above

∴ The numbers 10, 7, and 13 can form a triangle

Answer:

25

Step-by-step explanation:

..............

Answer:

5 5

Step-by-step explanation:

the second five is small five