Even if we reject the null hypothesis as our decision in the test, there is still a small chance that it is, in fact, true. True O False

Answer:

The graph that best fits this model of profit and price per unit is attached to this solution.

Step-by-step explanation:

A couple of graphs are missing from the question. According to the full question as obtained online, there are a number of graph options, and we are expected to pick the best option. I would not add all the other graphs to limit the chances of deletion due to violating community guidelines.

The function is to model the profits of a new pet-monitoring system, so, if the profits are y and x is the price per unit, y = f(x)

The profits vary as the price per unit varies, there is no profit made until the price reaches

$95 per unit, a maximum profit at a price of $140 per unit, and no profit at a price over $185 per unit.

This description of the curve shows that y is negative at values of x less than $95, then the profits increase when x varies between $95 and $140. The profits reach a maximum at $140 and then the profits start to decline as x increases again, the profits go to 0 at x = $185.

This description shows that the function is a quadratic function with a graph that is n-shaped, peaking at x=185 and the graph crosses the x-axis at x=95 and x=185.

The most fitting graph for this model is attached to this solution provided.

From the graph, all the descriptions above are evident.

Hope this Helps!!!

Answer:

Graph A!

Step-by-step explanation:

just passed on edge 2020

Step-by-step explanation:

The value today of a money machine is $4,712.25. The value of the investment is $31,323.15.

Question 9:

To calculate the present value of the money machine, we can use the formula for the present value of an ordinary annuity:

PV = P * [(1 - (1 + r)^(-n)) / r],

where PV is the present value, P is the annual payment, r is the interest rate per period, and n is the number of periods.

Given:

Annual payment (P) = $1000,

Interest rate per period (r) = 4% = 0.04,

Number of periods (n) = 6 - 2 = 4.

Plugging in the values, we get:

PV = $1000 * [(1 - (1 + 0.04)^(-4)) / 0.04] = $4712.25.

Therefore, the value today of the money machine is $4712.25.

Question 10:

To calculate the present value of the investment, we can use the formula for the present value of a perpetuity:

PV = P / r,

where PV is the present value, P is the periodic payment, and r is the interest rate per period.

Given:

Periodic payment (P) = $500,

Interest rate per period (r) = 12% / 12 = 0.12 / 12 = 0.01.

Plugging in the values, we get:

PV = $500 / 0.01 = $31,500.

Therefore, the value of the investment today is $31,323.15.

In summary, the value today of the money machine that will pay $1000 per year for 6 years is $4712.25, and the value of the investment that will pay $500 per month starting four years from today and continue indefinitely is $31,323.15.

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Answer:

Count to 2 and add 3/8

Step-by-step explanation:

Answer: 8 House

Step-by-step explanation: I did the test

The measure of angle c is 70 degrees.

If angle a and angle b are complementary, it means that the sum of their measures is equal to 90 degrees.

Given:

Measure of angle a = 10x + 10

Measure of angle b = 20

We can set up the equation:

(10x + 10) + 20 = 90

Simplifying the equation:

10x + 30 = 90

Subtracting 30 from both sides:

10x = 60

Dividing both sides by 10:

x = 6

Now, we have found the value of x to be 6.

To find the measure of angle c, we can substitute the value of x into the equation for angle a:

Measure of angle a = 10x + 10

Measure of angle a = 10(6) + 10

Measure of angle a = 60 + 10

Measure of angle a = 70

As a result, angle c has a measure of 70 degrees.

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Answer: 31.41592654 inches

Step-by-step explanation:

C = pi (d)

C = pi (10)

C = 31.41592654 inches

As similarity theorem, the value of x that will make the triangles similar by SSS similarity theorem is 77.

Similarity theorem:

In math, similarity theorem refers the line segment splits two sides of a triangle into proportional segments if and only if the segment is parallel to the triangle's third side.

Given,

Here we need to find the t value of will make the triangles similar by the similarity theorem.

For example, we are told that the 2 triangles are similar by SSS theorem.

Here we know that, SSS means Side - Side -Side and it is a congruence theorem which states that the 3 corresponding sides of two triangles have same ratio, then we can say that the two triangles are congruent by SSS theorem

Therefore, in the triangles ,applying the SSS postulate gives;

=> x/35 = 44/20

Then by applying the multiplication property of equality, let us multiply both sides by 35 to get;

=> x = (44 * 35)/20

When we simplify this one then we get,

=> x = 77

Therefore, the value of x is 77.

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The maximum number of strings that can be cut before the volleyball net falls apart into two pieces, considering a mesh with m squares on the horizontal dimension and n squares on the vertical dimension, is min(m+1, n+1).

To determine the maximum number of strings that can be cut before the volleyball net falls apart into two pieces, considering the mesh has m squares on the horizontal dimension and n squares on the vertical dimension, we can solve this as a network problem. Here's a step-by-step explanation:

1. Visualize the volleyball net as a graph with nodes representing the intersections of the strings and edges representing the strings themselves.

2. Observe that there are (m+1) nodes horizontally and (n+1) nodes vertically. This is because each square has a node at each corner, so there is an additional node on each side.

3. To separate the net into two pieces, you need to cut all the strings along a specific row or column of the mesh.

4. The maximum number of strings you can cut will be the minimum number of strings needed to cut through the entire mesh either horizontally or vertically.

5. If you choose to cut the strings horizontally, there will be (m+1) strings to cut for each row. Similarly, if you choose to cut the strings vertically, there will be (n+1) strings to cut for each column.

6. Compare the number of strings to cut in both directions, and choose the direction with the minimum number of strings to cut.

7. The maximum number of strings that can be cut before the net falls apart into two pieces is the minimum between (m+1) and (n+1).

So, the maximum number of strings that can be cut before the volleyball net falls apart into two pieces, considering a mesh with m squares on the horizontal dimension and n squares on the vertical dimension, is min(m+1, n+1).

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Hello!☺

\(Answer:\boxed{31x-9}\)

\(Explanation:\)

\(3x+7\times4x-9\)

Let's start off by simplifying:

\(3x+28x+-9\)

Now combine like terms:

\((3x+28x)+(-9)\\31x-9\)

\(31x-9\) is your answer.

Hope this helps!☺

The value that separates the bottom 81% from the top 19% is approximately 79.108

What is Standard Deviation?

The standard deviation is a number that tells how the measurements for a group are spread out from the mean (mean or expected value). A low standard deviation means that most of the numbers are close to the mean, while a high standard deviation means that the numbers are more spread out Advertisement Smart User What is Standard Deviation?

To find the value that separates the bottom 81% from the top 19% in a normally distributed set of scores with a mean of 68.9 and a standard deviation of 11.6, we can use the Z-score formula.

The Z-score represents the number of standard deviations a particular value is from the mean. By finding the Z-score corresponding to the desired percentile, we can then convert it back to the original scale using the formula:

Z = (X - μ) / σ

Where:

Z is the Z-score,

X is the desired value,

μ is the mean, and

σ is the standard deviation.

To find the value that separates the bottom 81% from the top 19%, we need to find the Z-score that corresponds to the 81st percentile.

Since the normal distribution is symmetric, the Z-score that separates the bottom 81% from the top 19% is the same as the Z-score that separates the top 19% from the bottom 81%.

Using a Z-table or statistical software, we can find that the Z-score corresponding to the 81st percentile is approximately 0.88.

Now we can solve for X using the Z-score formula:

0.88 = (X - 68.9) / 11.6

Simplifying the equation:

0.88 * 11.6 = X - 68.9

10.208 = X - 68.9

X = 10.208 + 68.9

X ≈ 79.108

Therefore, the value that separates the bottom 81% from the top 19% is approximately 79.108.

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a. The formula for F(t) is: F(t) = 5t + 45

b. The formula for B(t) is: B(t) = 1.5t + 50

c Fred's plant will be twice as tall as Barney's plant approximately 27.5 years after the start of 1995.

a) First, we need to find the slope (m). The change in height (Δy) divided by the change in time (Δt) gives us the slope.

m = Δy/Δt = (110 - 70)/(13 - 5) = 40/8 = 5

70 = 5 * 5 + b

70 = 25 + b

b = 70 - 25

b = 45

Therefore, the formula for F(t) is: F(t) = 5t + 45

b) Using the same approach as before, we can determine the equation for B(t).

m = Δy/Δt = (59 - 50)/(6 - 0) = 9/6 = 1.5

Using the point-slope form of the equation of a line, we can find the equation for B(t) by using the coordinates (0, 50):

y - y₁ = m(x - x₁)

B(t) - 50 = 1.5(t - 0)

B(t) - 50 = 1.5t

B(t) = 1.5t + 50

Therefore, the formula for B(t) is: B(t) = 1.5t + 50

c) To find the number of years after the start of 1995 when Fred's plant will be twice as tall as Barney's plant, we can set up the equation:

2 * B(t) = F(t)

Substitute the expressions for B(t) and F(t) into the equation:

2 * (1.5t + 50) = 5t + 45

Simplify the equation:

3t + 100 = 5t + 45

Subtract 3t from both sides:

100 = 2t + 45

Subtract 45 from both sides:

55 = 2t

Divide both sides by 2:

t = 27.5

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The steps in understanding the distribution of the differences in the sample means are-

The sample mean is a measure of the data's center. The sample mean is used to estimate the mean of any population.

Some key features regarding the sample mean are-

The formula for sample mean is-

Sample Mean = (Sum of terms) ÷ (Number of Terms)

\(\frac{\sum x_{i}}{n}\) = \(\frac{\left(x_{1}+x_{2}+x_{3}+\cdots+x_{n}\right)}{n}\)

Where,

\(\sum x_{i}\) = sum of the given data

n  = number of the data

Therefore, the steps in understanding the distribution of the differences in the sample means is given.

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Answer:

Four coordinate pairs that could serve as the other endpoint of the given line segment are given by:

Step-by-step explanation:

One endpoint of (4,-12), length of 5 units.

Four possible pairs:

Answer:3−4x/7≤y≤−8+5x

Step-by-step explanation:

The line of best-fit is of:

\(y = 21.37x + 169.58\)

Using the line:

------------------------

The line of best fit, for the amount spent on football in x years after 2005 is given by:

\(y = mx + b\)

\(m = \frac{\sum_{i = 1}^{6} (x_i - \overline{x})(y_i - \overline{y})}{\sum_{i = 1}^{6} (x_i - \overline{x})^2}\)

The means are:

\(\overline{x} = \frac{0 + 1 + 2 + 3 + 4 + 5}{6} = 2.5\)

\(\overline{y} = \frac{177 + 192 + 207 + 227 + 243 + 292}{6} = 223\)

Finding the slope:

\(\sum_{i = 1}^{6} (x_i - \overline{x})(y_i - \overline{y}) = 374\)

\({\sum_{i = 1}^{6} (x_i - \overline{x})^2} = 17.5\)

\(m = \frac{\sum_{i = 1}^{6} (x_i - \overline{x})(y_i - \overline{y})}{\sum_{i = 1}^{6} (x_i - \overline{x})^2} = \frac{374}{17.5} = 21.37\)

Now finding b:

\(y = 21.37x + b\)

Replacing the means:

\(223 = 21.37(2.5) + b\)

\(b = 169.58\)

Thus, the line of best fit is:

\(y(x) = 21.37x + 169.58\)

2022 is 2022 - 2005 = 17 years after 2005, thus, the estimate for 2022 is of:

\(y(17) = 21.37(17) + 169.58 = 532.87\)

Following the same logic, the estimate for 2041 is of:

\(y(36) = 21.37(36) + 169.58 = 938.9\)

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\(\huge \bf༆ Answer ༄\)

Here's the solution ~

Value of x is 64

The chi-square goodness-of-fit test can provide information on categorical data match an expected distribution and which categories are contributing to any deviation from that distribution.

The chi-square goodness-of-fit test is a statistical test used to determine whether a set of observed categorical data matches an expected distribution. Specifically, the test compares the observed frequencies of each category to the expected frequencies based on a hypothesized distribution, and calculates a chi-square statistic. This statistic measures the degree of difference between the observed and expected frequencies, with larger values indicating greater deviation from the expected distribution. If the chi-square statistic is large enough to reject the null hypothesis (i.e., the observed data do not match the expected distribution), the test can provide information on which categories are contributing the most to the discrepancy. This can help identify which categories are over-represented or under-represented in the observed data, and can inform further investigation into potential causes of the deviation. In summary, the chi-square goodness-of-fit test can provide information on whether observed categorical data match an expected distribution and which categories are contributing to any deviation from that distribution.

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Answer:

x= 8

y= -5

z= 0

Step-by-step explanation:

this is the correct answer to this system of equations.

Answer:

7

Step-by-step explanation:

The highest power of the given polynomial is 7. Therefore, the degree of the given polynomial is 7.

Answer:

I would choose the $400 raise

Step-by-step explanation:

Well 15% of 2000 would be $300 dollar raise so i would choose the $400 dollar raise instead of the $300 raise because I get more money.

If it was a 10% raise you would get $200 dollar raise

If it was 8% raise you would get $160 dollar raise

And if it was a 5% raise you would get a $100 dollar raise

Answer:

it takes 3 days for the crew to make one house

Answer:

See below

Step-by-step explanation:

A binomial distribution has the value of x representing the number of successes in n​ trials, while a geometric distribution has the value of x representing the first trial that results in a success.

Answer:

A, 2 · 8 + 2 · 55 + 88

Step-by-step explanation:

If we find the area of the two triangles above and below, we know the area of one triangle is 8 because (formula for area of triangle: a = bh x 1/2, and   a = 8(2) x 1/2 which equals 8). So if we double this area, we would get 2 · 8.

If we were to find the area of both the rectangles that are left and right of this figure, we know the area of one rectangle would be 55 because (formula for area of rectangle: a = l x w, and a = 5(11) would equal 55). So if we'd doubled this, we would get 2 · 55.

If we were to find the area of the rectangle in front of this entire figure, we know the area would be 88 because (formula for area of rectangle:                a = l x w, and a = 11(8) which would equal 88).

So if we find the surface area of this figure, we'd just need to piece this together to form:-

2 · 8 + 2 · 55 + 88

Answer:

2 · 8 + 2 · 55 + 88

Step-by-step explanation:

I do it right in khan academy

The union set combines the elements that are in different sets to form a new set

Assume that we have the following sets

The union of both sets is the collection of the elements of both sets (without repetition)

Assume that, we have:

A = {2,4,5}

B = {1,2,7}

The union of both sets would be:

A u B = {1,2,4,5,7}

See attachment for the graphical representation of the union set

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The probability of drawing an ace and a queen from a pack of cards without replacement is 1/78. This can be explained as follows:

In a standard pack of 52 cards, there are 4 aces and 4 queens. When two cards are drawn without replacement, the probability of drawing an ace and then a queen is 4/52 x 3/51 = 12/2652. This can be simplified to 1/78.

Without replacement means that the card that is drawn is not replaced in the deck before the next card is drawn. In this case, when the first card is an ace, there are only 3 queens left in the deck so the probability of the second card being a queen is 3/51.

To put it another way, the chances of drawing an ace and a queen when the cards are drawn without replacement can be thought of as a ratio of the favorable outcomes to the total number of possible outcomes. There is only one favorable outcome (ace-queen) out of a total of 78 possible outcomes (4 aces and 4 queens combined with the remaining 44 cards). Thus, the probability of drawing an ace and a queen is 1/78.

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Answer:

-150

or 150 degrees below 0

Step-by-step explanation:

The temp is -110. Dropping another 40 degrees means subtracting 40.

-110 - 40 = -150

Answer: no , the correct answer is 3x+2

Step-by-step explanation:

Remove parentheses.

x−1+2x+3

Collect like terms.

(x+2x)+(−1+3)

Simplify.

3x+2

Answer:

5 5/8

Step-by-step explanation:

also in a sec imma comment again the work so hold up

Answer:

2  3/8 I think

Step-by-step explanation:  well first you have to take 4 7/8 then subtract it by 2 1/2 to get 2 3/8.