I need help finding the answer to this question and a simple explanation on why it is correct. (8th grade Alegbra)

The correct alternative hypothesis for the Wilcoxon rank sum test is: ha: one distribution is shifted in a location higher or lower than the other. Option C is the answer.

This means that the test is designed to determine if there is a significant difference between the medians of two independent groups, rather than testing for a difference in means.

The null hypothesis for the test is that there is no significant difference between the two groups, while the alternative hypothesis states that there is a significant difference.

The Wilcoxon rank sum test is a nonparametric test and is used when the assumptions of the t-test are not met, such as non-normality or unequal variances.

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9 divided by 6

I took the test

The solution is that the three-digit number is 584.

What are three digit numbers ?

Three-digit numbers are numbers that have three digits, with each digit representing a value in a specific place value position. The first digit represents the hundreds place, the second digit represents the tens place, and the third digit represents the ones place.

For example, the number 357 is a three-digit number. The digit 3 represents 3 hundreds, the digit 5 represents 5 tens, and the digit 7 represents 7 ones. Therefore, the number 357 represents the value of 3 x 100 + 5 x 10 + 7 x 1 = 300 + 50 + 7 = 357.

Three-digit numbers range from 100 to 999, inclusive. There are 900 three-digit numbers in total.

According to the question:
Let the three-digit number be represented by the digits ABC, where A, B, and C are digits (with A representing the hundreds place, B representing the tens place, and C representing the ones place). Since we know that the number is a multiple of 8, we can assume that C = 0, 8, or 6 (since these are the only digits that make the entire number divisible by 8).

Let's start by assuming that C = 0. In this case, the three-digit number is represented by AB0. Adding a quarter of this number gives:

AB0 + 0.25(AB0) = AB0 + 0.25AB = 1.25AB0

Since we know that this amount is less than 740 but greater than 720, we can set up an inequality:

720 < 1.25AB0 < 740

Dividing each term by 1.25, we get:

576 < AB0 < 592

Since we know that AB0 is a multiple of 8, we can test the values of AB0 that satisfy this inequality and are multiples of 8. The only such value is 584, so AB0 = 584.

Therefore, the three-digit number is 584, and adding a quarter of this number gives:

584 + 0.25(584) = 730

which is between 720 and 740 as required.

Therefore, the solution is that the three-digit number is 584.

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The probability that at least 200 out of 215 college graduates under age 25 are employed is 0.29

In this question we have been given  8% of college graduates, under the age of 25 are unemployed.

We need to find the probability that at least 200 out of 215 college graduates under age 25 are employed.

Here, n = 215

8% of college graduates, under the age of 25 are unemployed.

So, p = 0.08

For graduates under age 25 are employed,

Pr = 1 - 0.08

Pr = 0.92

We use Normal probability distribution

The expected value of the binomial distribution is:

E(x) = n * Pr

E(x) = 215 * 0.92

E(x) = 197.8

So, μ = E(x)

        = 197.8

An the standard deviation would be,

σ = √n * Pr * (1 - Pr)

σ = √(215 * 0.92 * 0.08)

σ = 3.98

An expression for the exact probability that at least  200 out of 215 college graduates under age 25 are employed.

P(x ≥ 200)

which is nothing but the pvalue of Z when x = 200

z = x - μ/σ

z = (200 - 197.8)/3.98

z = 0.55 has p value 0.29

Therefore, the required probability is 0.29

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Answer:  -11

Step-by-step explanation:

y²+7y+1​

(-3)^2 +7*(-3)+1

9 -21 + 1 = -11

Answer:

There's no A so I'm going to assume you meant X

X = 23

Step-by-step explanation:

X is equal to 23, because 23 - 18 = 5

or 5 + 18 = 23

c. 5x4=20

4x4=16 items.

The advertising appeal used in this ad is a health appeal. The ad promotes the nutritional value of White House applesauce cups by highlighting that they provide 100% of daily Vitamin C in every cup.

This appeal focuses on the health benefits of the product, suggesting that consuming it will be good for one's well-being.

By emphasizing the nutritional value of the product, this appeal targets consumers who are concerned about their health and wellness. It suggests that by choosing White House applesauce cups, consumers can ensure they are getting an important nutrient without having to consume additional supplements or make other changes to their diet.

Overall, health appeals are a powerful marketing technique, as many people prioritize their health and are willing to pay more for products that they perceive as being beneficial for their well-being. By using this appeal, the ad for White House applesauce cups seeks to influence consumers to purchase the product based on its perceived health benefits.

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1. The population parameter are we trying to build an interval estimate for is p2 - p1.

2. The sample estimate for this quantity is 5000.

3. The standard error for the original sample statistic is μ

4. The center of your bootstrap distribution is variability.

5.  The bootstrap distribution represents many possible values of the sample statistic

6. The 95% confidence interval for the population parameter is 2.5 percentile

The population parameter we are trying to estimate is the difference in proportions between Republicans and Democrats who think that the COVID-19 situation is getting better. We can represent this parameter as p1 - p2, where p1 is the proportion of Republicans who think the COVID-19 situation is getting better, and p2 is the proportion of Democrats who think the COVID-19 situation is getting better.

To calculate the sample estimate for this quantity, we need to collect data from a sample of Republicans and Democrats and calculate the difference in proportions who think the COVID-19 situation is getting better.

To build a bootstrap confidence interval, we first create a bootstrap distribution by resampling our original sample with replacement many times at least 5,000 times.

The center of our bootstrap distribution is the mean of the bootstrap samples, which is an estimate of the true population parameter. We can represent this center as the mean of our bootstrap distribution, denoted as μ.

The center of the bootstrap distribution is likely to be close to the sample estimate, but it may be slightly different due to the variability in the bootstrap samples.

To compute the 95% confidence interval, we need to find the range of values in our bootstrap distribution that contains 95% of the values. We can do this by finding the 2.5th percentile and the 97.5th percentile of the bootstrap distribution, which represent the lower and upper bounds of our confidence interval.

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Answer:

X=4(61)^1/2

Step-by-step explanation:

X^2=20^2+24^2

X^2=976

X=(976)^1/2

X=4(61)^1/2

The correct Option (B). Succession may be defined as the change in the ecological community of the species with respect to time. Two main types of succession are primary succession and secondary succession.

The living things that accumulate in the succession is from the simple organism to the complex organism. First lichens will evade in the land. After lichens grass then shrubs and finally the trees will cover the area and convert into the forest.

Primary succession occurs in basically dead areas—regions where the soil is incapable of supporting life due to causes such as lava flows, newly created sand dunes, or glacier-left boulders.

Pioneer microorganisms, plants (lichens and mosses), grassy stage, smaller shrubs, and trees are all stages of primary succession. When there is food available, animals begin to return. The climax community stage is reached when the ecosystem is fully functional.

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Full Question :

After a town is abandoned, the concrete parking lots remain empty and inactive for hundreds of years. What is the most likely order of ecological succession in that area?

A.grass → trees → lichens → moss

B.lichens → grass → shrubs → trees

C.lichens → grass → trees → shrubs

D.shrubs → grass → trees → lichens

Answer: When you increase the confidence level from 95 percent to 99 percent, the confidence interval will generally become wider, making it less precise but more certain.

Step-by-step explanation:

If you calculate a 99 percent confidence interval rather than a 95 percent confidence interval, the width of the interval would typically increase. A higher confidence level requires a wider interval to provide a greater level of certainty.

To understand this better, let's consider the concept of a confidence interval. A confidence interval is a range of values around a sample statistic (such as a mean or proportion) that is likely to contain the true population parameter with a certain level of confidence.

When calculating a confidence interval, you choose a confidence level, which represents the probability that the interval will contain the true population parameter. A 95 percent confidence level implies that, in repeated sampling, 95 percent of the intervals generated would contain the true population parameter.

Increasing the confidence level to 99 percent means that you want to be more confident in capturing the true population parameter, which requires constructing a wider interval. This wider interval provides more room to account for potential variability and reduces the chance of excluding the true parameter value.

Therefore, when you increase the confidence level from 95 percent to 99 percent, the confidence interval will generally become wider, making it less precise but more certain.

It is important to note that while a higher confidence level may provide greater certainty, it comes at the cost of increased interval width, which reduces the precision of the estimate. Therefore, choosing the appropriate confidence level depends on the specific context and the balance between desired precision and level of certainty.

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Answer:When you increase the confidence level from 95 percent to 99 percent, the confidence interval will generally become wider, making it less precise but more certain.

         If you calculate a 99 percent confidence interval rather than a 95 percent confidence interval, the width of the interval would typically increase. A higher confidence level requires a wider interval to provide a greater level of certainty.

To understand this better, let's consider the concept of a confidence interval. A confidence interval is a range of values around a sample statistic (such as a mean or proportion) that is likely to contain the true population parameter with a certain level of confidence.

When calculating a confidence interval, you choose a confidence level, which represents the probability that the interval will contain the true population parameter. A 95 percent confidence level implies that, in repeated sampling, 95 percent of the intervals generated would contain the true population parameter.

Increasing the confidence level to 99 percent means that you want to be more confident in capturing the true population parameter, which requires constructing a wider interval. This wider interval provides more room to account for potential variability and reduces the chance of excluding the true parameter value.

Therefore, when you increase the confidence level from 95 percent to 99 percent, the confidence interval will generally become wider, making it less precise but more certain.

It is important to note that while a higher confidence level may provide greater certainty, it comes at the cost of increased interval width, which reduces the precision of the estimate. Therefore, choosing the appropriate confidence level depends on the specific context and the balance between desired precision and level of certainty

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Answer: x= 6

Step-by-step explanation:

Since the shape is a parallelogram, the angles will either be equal to each other or add up to 180.  

You can see they do not look the same so they add up to equal 180

12x + 3 +105 = 180

12x + 108 = 180

12x = 72

x = 6

The number of marbles that Leah has is: 48 marbles

Information about the problem:

To solve this problem we must establish the equation, isolate the variable following the rules of clearance and solve the operations:

Solving the equation we have:

1/3 x = 4/5 (x-28)

Simplifying the equation we have:

5(1x) = 3*[4*(x-28)]

5x = 12(x-28)

5x = 12x-336

336 = 12x-5x

7x = 336

x = 336/7

x = 48

Leah = x

Leah = 48

Dan = x - 28

Dan = 48-28

Dan = 20

An equation is the equality between two algebraic expressions, which have at least one unknown or variable.

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Answer:

a

34

b

17

c

46

Step-by-step explanation:

a

Lowest age = 21

Highest age = 55

Range = 34

b

Add them all together and you get 17

c

Median is middle

17 total people

Formula for median:

(n + 1)/2 = th

n is the total

17 + 1 is 18

18 halved is the 9th number

The 9th number is 46

Answer:what

Step-by-step explanation:what does this mean

Answer:

9x+7y+13

Step-by-step explanation:

add all the x's, y's, and no exponents together

Answer:

\(2x + x + \frac{1}{x} + \frac{2}{3x} \\ = \frac{6 {x}^{2} + 3 {x}^{2} + 3 + 2 }{3x} \\ = \frac{9 {x}^{2} + 5 }{3x} \)

Step-by-step explanation:

I am a math teacher If you need any explanation you can communicate with me on Whats on this number 01557831028

Answer:

12*8 = 96

Step-by-step explanation:

base area times hieght is equal to volume

The volume of the rectangular prism is 96 cubic centimeters.

Explanation:

The volume of a rectangular prism is given by the formula:

V = base area x height

The base area is 12 cm and the height is 8 cm. Substituting these values into the formula, we get:

V = 12 cm x 8 cm

V = 96 cubic centimeters

Therefore, the volume of the rectangular prism is 96 cubic centimeters.

In conclusion, the Hawaii Volcanoes National Park is a unique and important site for scientific research and provides a glimpse into the past environment and ecosystem of the region.

Hawaii Volcanoes National Park covers an area of approximately 505 square miles (1,308 square km) and is located on the island of Hawaii.

This National Park is unique and is home to some of the most active volcanoes in the world. It is a UNESCO World Heritage Site.

Recently, fossilized footprints have been found within the Hawaii Volcanoes National Park. The Hawaii Volcanoes Wilderness is an area that covers the park.
A number line is a line that is drawn and labeled with numbers. The numbers on the line represent points on the line, and the space between each number is equal.
Drawing a number line for the 1-2 range:
To draw a number line for the 1-2 range, we first draw a horizontal line with a starting point at 1 and an ending point at 2. We then place a number at the starting point (1) and the ending point (2) and label them.
The discovery of fossilized footprints within the Hawaii Volcanoes National Park is a remarkable discovery as it could provide information about the past environment, ecosystem, and climate of the region.

Fossil footprints are an important source of information for paleontologists and help them to study the lives of ancient organisms. The National Park is a unique site and is home to two active volcanoes: Mauna Loa and Kilauea.

These two volcanoes have been erupting for thousands of years, and they have created a unique landscape. Visitors to the park can witness the awesome power of nature firsthand.

The park has been designed to allow visitors to enjoy the natural beauty of the region while preserving the unique ecosystem and biodiversity of the area.

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Answer:

97% of change decrease

Step-by-step explanation:

5\4 = 125%

3\8 =38%

125-38=97

97% of change decrease

hoped that helped

Answer:

Step-by-step explanation:

Given:

Simplify:

log both sides:

An interval is a set of real numbers that contains all real numbers lying between any two numbers of the set.

For each calculation, the smallest interval in which the result, using true instead of rounded values, must lie is as follows:

(a) 1.1062+0.947 = 2.0532 ≤ true result ≤ 2.053

(b) 23.46 - 12.753 = 10.707 ≤ true result ≤ 10.708

(c) (2.747) (6.83) = 18.6181 ≤ true result ≤ 18.6182

(d) 8.473/0.064 = 132.3906 ≤ true result ≤ 132.3907

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The radius of convergence of series (cn dn)xn is 14.

The radius of convergence of a power series (cn xn) is the distance from the origin to the point beyond which the series no longer converges. It is denoted by R and it's calculated by using the formula:

R = 1/lim sup|cn|^(1/n)

The radius of convergence of a product of two series (cn xn) and (dn xn) is the minimum of the radius of convergence of the individual series.

So, in this case, since the radius of convergence of the series cn xn is 14 and the radius of convergence of the series dn xn is 15, the radius of convergence of the product series (cn dn)xn is

min(14, 15) = 14

Therefore, the radius of convergence of the product series (cn dn)xn is 14.

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The system of equations has infinite solutions, both equations represent the same line.

Here we have the following system of equations:

-3x+6y=12

2y=x+4

And we want to solve this by substitution, first, we can rewrite the first equation as:

-3x + 3*(2y) = 12

Now we can substitute the second equation 2y = x + 4 in the parenthesis, we will get:

-3x + 3*(x + 4) = 12

Now we can solve this for x.

-3x + 3x + 12 = 12

12 = 12

So this is true for any value of x, which means that both equations represent the same line (thus the system has infinite solutions).

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Answer:

x = -8

Step-by-step explanation:

all the angles in a triangle add up to 180 degrees

55 + 70 + x + 63  = 180

188 + x = 180

x = -8

Answer: can you put it in diffrent form beucase the way you have it is really confusing me thanks

Step-by-step explanation:

a) The z-score corresponding to the probability of 0.2000 to the right is z = 0.84.

b) The z-score corresponding to the probability of 0.9000 to the left is z = -1.28.

a) To find the z-score corresponding to a probability of 0.2000 to the right, we need to use the fact that the area under the standard normal distribution to the right of z is equal to 1 minus the area to the left of z.

In other words, we need to find the z-value such that the area to the left of it is equal to 1 - 0.2000 = 0.8000. Consulting a standard normal distribution table or using a calculator, we find that this z-value is approximately 0.84. Therefore, the answer is z = 0.84.

b) Similarly, to find the z-score corresponding to a probability of 0.9000 to the left, we need to find the z-value such that the area to the left of it is equal to 0.9000. Consulting a standard normal distribution table or using a calculator, we find that this z-value is approximately 1.28. Therefore, the answer is z = -1.28.

In both cases, we used the fact that the standard normal distribution has a mean of 0 and a standard deviation of 1, and we transformed the probability into an area under the curve.

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Complete question is:

For a standard normal random variable, what z-score has:

a) probability 0.2000 to the right? z = _____  

b) probability 0.9000 to the left? z = _________