A random sample of size is selected from a population with. A. What is the expected value of (to 2 decimals)? B. What is the standard error of (to 2 decimals)? C. Show the sampling distribution of (to 2 decimals). D. What does the sampling distribution of show? Blank

Answer:

The answer is 22 cards are left in the stack.

Step-by-step explanation:

Answer:

22 cards

Step-by-step explanation:

because you add 6 plus 26 and get 32 then subtract 7 which equals 25 then subtract once more with 3 and you get 22, i think..

(a) Proof by contrapositive:

To prove that if n^2 is even, then n must be even, we will prove the contrapositive statement: If n is odd, then n^2 is odd.

Assume that n is odd, which means it can be expressed as n = 2k + 1 for some integer k.

Now, let's square n:

n^2 = (2k + 1)^2 = 4k^2 + 4k + 1 = 2(2k^2 + 2k) + 1.

We can see that n^2 is of the form 2m + 1, where m = 2k^2 + 2k, and m is an integer.

Therefore, n^2 is odd. This completes the proof by contrapositive.

(b) Proof by contradiction:

To prove that if n^2 is even, then n must be even, we will assume the opposite and show that it leads to a contradiction.

Assume that n^2 is even, but n is odd.

Since n is odd, it can be expressed as n = 2k + 1 for some integer k.

Now, let's square n:

n^2 = (2k + 1)^2 = 4k^2 + 4k + 1 = 2(2k^2 + 2k) + 1.

We can see that n^2 is of the form 2m + 1, where m = 2k^2 + 2k, and m is an integer.

This contradicts the assumption that n^2 is even.

Therefore, our assumption that n is odd leads to a contradiction, and we conclude that if n^2 is even, then n must be even.

3. Proof that if n is even, then n^2 - 4 is for some integer s:

Assume that n is even, which means it can be expressed as n = 2k for some integer k.

Now, let's calculate n^2 - 4:

n^2 - 4 = (2k)^2 - 4 = 4k^2 - 4 = 4(k^2 - 1) = 2(2k^2 - 2).

We can see that n^2 - 4 is of the form 2m, where m = 2k^2 - 2, and m is an integer.

Therefore, if n is even, then n^2 - 4 is divisible by 2 and can be expressed as 2s, where s = k^2 - 1, and s is an integer.

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[Mathematical Problem]

\(9.14\) ÷ \(0.04\)

Solution:

\(228.5\)

Hope this helps! Thanks and good luck!

Answer:

(1,-3.7)

Step-by-step explanation:

subtract the y axis to go down

5 - 8.7 = -3.7

The solution is B ( 1 , -3.7 )

The coordinates of the zombie is given by B ( 1 , -3.7 )

How does the transformation of a function happen?

The transformation of a function may involve any change.

Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs), etc.

If the original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:

Horizontal shift (also called phase shift):

Left shift by c units:  y=f(x+c) (same output, but c units earlier)

Right shift by c units:  y=f(x-c)(same output, but c units late)

Vertical shift:

Up by d units: y = f(x) + d

Down by d units: y = f(x) - d

Stretching:

Vertical stretch by a factor k: y = k × f(x)

Horizontal stretch by a factor k: y = f(x/k)

Given data ,

Let the initial point of the man be A

The value of A = A ( 1 , 5 )

Let the coordinates of the zombie be B

The value of B = B ( x , y )

The zombie is 8.7 units below

So , it is a vertical shift by 8.7 units

Therefore , the y coordinate will decrease by 8.7 units

Substituting the values in the equation , we get

B = A ( 1 , 5 - 8.7 )

B = B ( 1 , -3.7 )

Therefore , the value of B is B ( 1 , -3.7 )

Hence , the coordinates of B is B ( 1 , -3.7 )

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Answer:

sale price is

Step-by-step explanation:

1000x 30/100

1000x0.3

$300.00

$1000-300.00

=700 sale price

Answer:

The one on the upper right (Regular Price: $1000, Sale Price: ? Discount %30)

Step-by-step explanation:

I got it right on the i-Ready quiz!

Answer:

\(3(x - 2) = 12\)

\(x - 2 = 4\)

\(x = 4 + 2\)

\(x = 6\)

The answer is:

x = 6

Work/explanation:

For now, I will focus on the left side, and use the distributive property.

\(\begin{gathered}\sf{3(x-2)=12}\\\\\sf{3x-6=12}\\\\\bf{Add~6~on~each~side}\\\\\sf{3x=18}\\\\\sf{x=6}\end{gathered}\)

Hence, x = 6.

Answer:

h=2

Step-by-step explanation:

7h=−(2h−18)

Distribute the minus sign

7h = -2h +18

Add 2h to each side

7h +2h = -2h+2h +18

9h = 18

Divide each side by 9

9h/9 =18/9

h =2

Answer:

h = 2

I got it right on Kahn Academy

The name of every month ends in the letter y is the given statement. February is a counterexample to this statement. This is because February does not end with the letter 'y'. So the right  option is (c) February.

What is a counterexample?

In mathematics, a counterexample is an example that opposes or disproves a statement, proposition, or theorem. It is a scenario, an instance, or an example that goes against the given statement.

Therefore, a counterexample demonstrates that the given statement is false or invalid.In this case, the statement is: "The name of every month ends in the letter y." We have to find which of the months listed does not end in "y."February is the only month in the options listed that does not end in the letter "y."

Thus, it is a counterexample to the given statement. Therefore, the correct option is C, February.

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Answer:

the answer os eleven

Step-by-step explanation:

As oyu see the half way number is 4 higher that 7 and 4 lower than 15.

Answer:

B. $34,086

Step-by-step explanation:

did the math

The total amount of annual take-home pay of Cynthia is $34,086.25

Income tax is a tax applied on individuals or entities concerning income or profit earned by them.

Cynthia earns $41,875 annually.

If the Canadian government levies an income tax of 18.6% on Cynthia’s tax bracket.

It can be calculated as

41,875 × 18.6%

41,875 × 18.6/100 = 7,788.75

The annual take-home pay

41,875 - 7,788.75 = $34,086.25

Thus, The total amount of annual take-home pay is $34,086.25.

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Answer:

The answer is (3,5)

Step-by-step explanation:

Sana Maka tulong

The probability of a randomly selected timber stand having more than 92 trees is 0.0744 or 7.44%.

Managed timber stands average 150 trees per acre with a standard deviation of 40. Assume acres are normally distributed.To find the probability of a randomly selected timber stand having more than 92 trees.We have to calculate the Z-Score using the formula,Z= (X-μ)/ σWhere X= 92 treesμ = 150 treesσ= 40Using the formulaZ= (X-μ)/ σZ= (92-150)/40= -1.45We know that the area under the normal distribution curve is 1. To find the probability of a random variable that falls between two points, we need to find the area between those points.A normal distribution curve is shown below:To find the probability of a randomly selected timber stand having more than 92 trees, we need to find the area to the right of Z= -1.45 using a normal distribution table. The probability is 0.0744 or 7.44%.Therefore, the probability of a randomly selected timber stand having more than 92 trees is 0.0744 or 7.44%.

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Answer:

a.

Step-by-step explanation:

you add 2 & 3 ... you get 4. then you add 2 & 4 ... you get 6.

Answer:

62

Step-by-step explanation:

IM NOT SURE I THINK BUT hope this helps :)

16=4

49=7

289=17

Step-by-step explanation:

Answer:

(6*10)/5

= 60/5

= 12

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

6x / y

Let x = 10 and y = 5

6*10 / 5

60/5

12

In terms of the top 5%, the exact net worth that would place an individual in this category can vary depending on the time and location.

However, as of 2021, the median net worth of American households was around $121,000, so being in the top 5% would likely mean having a net worth significantly higher than this amount.

It is important to note that having a high net worth does not guarantee financial security, as factors such as income and spending patterns also play a role in overall financial well-being.

Nevertheless, having a high net worth can provide greater flexibility and security in terms of financial planning and decision-making.

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Answer:

(14, - 3 )

Step-by-step explanation:

Under the translation < 6, 0 >

Add 6 to the x- coordinate and 0 to the y- coordinate, that is

B(8, - 3 ) → B'(8 + 6, - 3 + 0 ) → B'(14, - 3 )

Answer:

b. c. d

Step-by-step explanation:

Answer:

Some teens are at greater risk than others.

For example, youth who are victims of teen dating violence are more likely to experience symptoms of depression and anxiety. Engage in unhealthy behaviors, like using tobacco, drugs, and alcohol. Exhibit antisocial behaviors, like lying, theft, bullying, or hitting.

Step-by-step explanation:

Yes  all 3 you choose are correct

Answer:

Step-by-step explanation:

AT first, draw the reference line, which are given. If I take PQ as base, I won't need to draw PQ line as reference.

I took PQ(5.5cm) as base. Then, take 4.8cm in your compass by centering at point Q. Draw an arc. Then take 4.2 cm in your compass from the reference line which you have drawn and then centre at point P and draw an arc. Both the arcs will meet at one point. Then join the lines to form the Triangle PQR

Answer:

3.3 LBS

Step-by-step explanation:

33 pounds for 10 cups

33/10

3.3

Answer:

y+x = -4

Step-by-step explanation:

-4 indicates where the line intercept the y axis

if we put y=0 we can find where line intercepts the x axis.

it results x = -4

the two values are negative

Answer:

A

Step-by-step explanation:

Answer:

A,

23/6v+28

Step-by-step explanation:

Answer:

D. 23/6v+28

Step-by-step explanation:

The value of x is 48 km/hr.

How to solve for X

Total distance = 68 km

Total time = 50 minutes

First part:

Duration = 20 minutes

Speed = x km/hr

Second part:

Duration = 25 minutes

Speed = 2x km/hr

Third part:

Duration = 50 - (20 + 25) = 5 minutes

Speed = 3x km/hr

We can calculate the distance traveled in each part using the formula:

distance = speed × time

For the first part:

distance1 = x × (20/60) = (1/3)x (because 20 minutes = 1/3 hour)

For the second part:

distance2 = 2x × (25/60) = (5/6)x (because 25 minutes = 5/12 hour)

For the third part:

distance3 = 3x × (5/60) = (1/4)x (because 5 minutes = 1/12 hour)

Now, we know that the total distance is 68 km, so:

distance1 + distance2 + distance3 = 68

(1/3)x + (5/6)x + (1/4)x = 68

To solve for x, we'll first find a common denominator for the fractions, which is 12:

(4/12)x + (10/12)x + (3/12)x = 68

Now, add the fractions:

(4+10+3)/12 * x = 68

17/12 * x = 68

To isolate x, we'll multiply both sides by the reciprocal of the fraction (12/17):

x = 68 * (12/17)

x = 4 * 12

x = 48

So, the value of x is 48 km/hr.

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The complete question is

"Find the general solution of the given differential equation

y''-y=0, y1(t)=e^t , y2(t)=cosht

The function \(y(t)=e^t\)  is the solution of the given differential equation.

The function y(t)=cosht is the solution of given differential equation.

The function is a type of relation, or rule, that maps one input to specific single output.

Given;

\(y_1(t) = e^t\)

Given differential equations are,

y''-y = 0

 So that,  

\(y' (t) = e^t, y'' (t) = e^t\)

Substitute values in the given differential equation.

\(e^t -e^t=0\)

Therefore, the function \(y(t)=e^t\)  is the solution of the given differential equation.

Another function;

\(y(t)=cosht\)  

So that,  

\(y"(t)=sinht\\\\y"(t)=cosht\)

Hence, function y(t)=cosht is solution of given differential equation.

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The probability of number of 1-2 Children in car and 3 plus children in car is 0.203.

We have,

The possibility of the result of any random event is known as probability. This phrase refers to determining the likelihood that any given occurrence will occur.

The probability of P(1-2 children| car). P (3 plus children| car) is given by:

P = 63/88 × 25/88

P=0.203

The probability of P(Bus| 1-2 children). P (Bus | 3 plus children) is given by:

P = 38/101 × 49/74

P=0.249

The probability of P(Car |1-2 Children) is given by:

P= 63/101

P=0.624

The probability of P(3 plus children | Bus)is given by:

P=49/87

P=0.563

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complete question:

Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.

The table shows the mode of transportation to school for families with a specific number of children.

Mode of Transportation

Car

Number of

Children

0.284

1-2

63

38

3+

25

49

Total

88

87

A family from the survey is selected at random. Match the probability to each event.

0.662

Bus

0.203

0.249

101

74

175

0.624

P (3+ Children Bus)

Total

P(1-2 Children Car) - P (3+ Children Car)

Reset

P (Car 1-2 Children)

0.563

P (Bus 1-2 Children) - P (Bus 3+ Children)

▸

Answer:

Step-by-step explanation:

here cuhh

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Based on the provided informations, the function f(x) is calculated out to be f(x) = \($\frac{1}{25}(6+10x)^{\frac{5}{2}}+13-\frac{1}{25}(16)^{\frac{5}{2}}$\)

We can find the function f(x) by integrating the given derivative function f'(x). Using the power rule of integration, we have:

\(\int \sqrt{x(6+10x)} dx\)

We can simplify this expression by using substitution. Let u = 6 + 10x, then du/dx = 10 and dx = du/10. Substituting these into the integral, we have:

\($f(x) = \int \sqrt{x(6+10x)} dx\)

\(= \frac{1}{10}\int \sqrt{x}u^{\frac{1}{2}}du\)

\(= \frac{1}{10}\int u^{\frac{3}{2}}du\)

\(= \frac{1}{10}\cdot \frac{2}{5}u^{\frac{5}{2}}+C\)

\(= \frac{1}{25}(6+10x)^{\frac{5}{2}}+C$\)

where C is the constant of integration.

Using the given initial condition f(1) = 13, we can solve for the constant of integration:

\($f(x) = \frac{1}{25}(6+10x)^{\frac{5}{2}} + C\)

\(13 = \frac{1}{25}(16 +10x)^{\frac{5}{2}} +C\right)$\)

\(C= 13 - \frac{1}{25}(16)^{\frac{5}{2}}\right)$\)

Therefore, the function f(x) is:    \($\frac{1}{25}(6+10x)^{\frac{5}{2}}+13-\frac{1}{25}(16)^{\frac{5}{2}}$\)

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