Samples of size n = 125 are randomly selected from the United States census data. Which sample
statistic will best target the population parameter?

A standard deviation
B proportion
C mean
D range

Answer:

Answer:

Step-by-step explanation:

To reach your fundraising goal of $75, you will need to sell 150 pencils for $0.50 each and 0 bracelets for $1.00 each.

To reach your fundraising goal of $75, you can sell pencils for $0.50 and bracelets for $1.00.

1. Calculate the total amount of money needed to reach the goal:
  Goal amount = $75

2. Determine the number of pencils and bracelets you need to sell to reach the goal:
  Let's assume you sell x number of pencils and y number of bracelets.

  The amount raised from selling pencils = x * $0.50
  The amount raised from selling bracelets = y * $1.00

  The total amount raised from both items should be equal to the goal amount:
  x * $0.50 + y * $1.00 = $75

3. Simplify the equation:
  0.50x + 1.00y = 75

4. Solve for one variable in terms of the other:
  Let's solve for x in terms of y:
  0.50x = 75 - 1.00y
  x = (75 - 1.00y) / 0.50

5. Substitute the value of x into the equation:
  (75 - 1.00y) / 0.50 * 0.50 + y * $1.00 = $75
  75 - 2y + y = 75
  -y = 0
  y = 0

6. Find the value of x:
  x = (75 - 1.00 * 0) / 0.50
  x = 75 / 0.50
  x = 150

To reach your fundraising goal of $75, you will need to sell 150 pencils for $0.50 each and 0 bracelets for $1.00 each.

To know more about fundraising goal visit:

https://brainly.com/question/28324495

#SPJ11

Answer:

x= -4/11

y= -19/11

Step-by-step explanation:

Answer:

x = -2/3

Step-by-step explanation:

y=2x-1

3x + 4(2x-1) = -8

3x + 8x -4 = -8

11x = -4

The total surface area is 640.56 in².

We have,

The TSA (Total Surface Area) of a cone is given by the formula:

TSA = πr² + πrℓ

Now,

We see that,

There are two cones so we find the TSA for both the cones and add them up to get the TSA.

So,

Cone 1:

r = 6 in

l² = r² + h²

l² = 36 + 64

l² = 100

l = 10

So,

TSA = πr² + πrℓ

= 3.14 x 36 + 3.14 x 6 x 10

= 113.04 + 188.4

= 301.44 in²

Cone 2:

r = 6 in

l = 12 in

TSA = πr² + πrℓ

= 3.14 x 6 x 6 + 3.14 x 6 x 12

= 113.04 + 226.08

= 339.12 in²

Now,

Total surface area.

= 301.44 + 339.12

= 640.56 in²

Thus,

The total surface area is 640.56 in².

Learn more about cones here:

https://brainly.com/question/13798146

#SPJ1

The points (–2, 8) and (2, –8) are reflections of each other across both axes. This can be seen by taking their coordinates and plugging them into the reflection formula, which is (x, y) → (–x, –y).

When we plug in the coordinates for the first point, we get (–2, 8) → (–(–2), –(8)) = (2, –8). This is the coordinates of the second point, so they are reflections of each other.

The points (–7, –1) and (–7, 1) are also reflections of each other across both axes. Using the same reflection formula, we get (–7, –1) → (–(–7), –(–1)) = (7, 1), which are the coordinates of the second point.

The points (5, –6) and (–5, –6) are reflections of each other across both axes. Applying the reflection formula, we get (5, –6) → (–(5), –(–6)) = (–5, 6), which are the coordinates of the second point.

Finally, the points (4, –3) and (–3, 4) are reflections of each other across both axes. Using the reflection formula, we get (4, –3) → (–(4), –(–3)) = (–4, 3), which are the coordinates of the second point.

Learn more about reflections here:

https://brainly.com/question/15487308

#SPJ4

Answer:

(-7,-2)  

Step-by-step explanation:

y = 3x + 19

y = 5x + 33

Substitute in y. Basically set equal to each other.

3x + 19 = 5x + 33

-2x = 14

x = -7

y = 3 (-7) + 19

y = -21 + 19

y = -2

Answer:

y = -2

x = -7

Step-by-step explanation:

Substitute y= 5x + 33

5x + 33 = 3x + 19

Isolate x for 5x + 33 = 3x + 19: x = -7

For y = 5x + 33

Substitute x = -7

y = 5(-7) + 33

y = -2

So the solution is y= -2, x=-7

Answer:

v=20π ft/s

Step-by-step explanation:

Given:

Distance from the security car to the movie theater, D=25 ft

Distance of the reflection from the car, d=30 ft

Speed of rotation of the strobe lights, 2 rev/s

To find the speed at which the reflection of the security strobe lights is moving along the wall of the movie theater, we need to calculate the linear velocity of the reflection when it is 30 ft from the car.

We can start by finding the angular velocity in radians per second. Since the strobe lights rotate at 2 revolutions per second, we can convert this to radians per second.

ω=2πf

=> ω=2π(2)

=> ω=4π rad/s

The distance between the security car and the reflection on the wall of the theater is...

r=30-25= 5 ft

The speed of reflection is given as (this is the linear velocity)...

v=ωr

Plug our know values into the equation.

v=ωr

=> v=(4π)(5)

∴ v=20π ft/s

Thus, the problem is solved.

The speed of the reflection of the security strobe lights along the wall of the movie theater is 2π ft/s.

To solve this problem, we can use the concept of related rates. Let's consider the following variables:

x: Distance between the security car and the movie theater wall

y: Distance between the reflection of the security strobe lights and the security car

θ: Angle between the line connecting the security car and the movie theater wall and the line connecting the security car and the reflection of the strobe lights

We are given:

x = 25 ft (constant)

y = 30 ft (changing)

θ = 2 revolutions per second (constant)

We need to find the speed at which the reflection of the security strobe lights is moving along the wall (dy/dt) when the reflection is 30 ft from the car.

Since we have a right triangle formed by the security car, the movie theater wall, and the reflection of the strobe lights, we can use the Pythagorean theorem:

x^2 + y^2 = z^2

Differentiating both sides of the equation with respect to time (t), we get:

2x(dx/dt) + 2y(dy/dt) = 2z(dz/dt)

Since x is constant, dx/dt = 0. Also, dz/dt is the rate at which the angle θ is changing, which is given as 2 revolutions per second.

Plugging in the known values, we have:

2(25)(0) + 2(30)(dy/dt) = 2(30)(2π)

Simplifying the equation, we find:

60(dy/dt) = 120π

Dividing both sides by 60, we get:

dy/dt = 2π ft/s

For more such question on speed. visit :

https://brainly.com/question/26046491

#SPJ8

Yes, the union has the required 3 to 2 majority.

Given that a sample of the employees at the local market who would like to be represented by the union was found to be 74 out of 120. The fraction of employees in favor of the union is `74/120`.

This can be reduced to `37/60`. Therefore, the fraction of employees not in favor of the union is `1 - 37/60`.This is equal to `23/60`.

Therefore, the ratio of employees in favor of the union to employees against the union is `37:23`. This can be reduced to `3:2`.

Hence, the union has the required 3 to 2 majority.

To know more about union: https://brainly.com/question/881501

#SPJ11

The average change in the volume of water per day is obtained as 0.625  litres.

The rate change of volume is the change of volume with respect to time.

For instantaneous change the derivative of the expression of volume can be taken.

The average change in the volume of water can be obtained as follows,

Average change = Volume of water ÷ Number of days

                            = 2.5 ÷ 4 = 0.625

Hence, the average change in water volume is given as  0.625 liters per day.

To know more about rate change of volume click on,

https://brainly.com/question/22716418

#SPJ1

1. Three examples of situations where consistency is important:

Healthcare: when treating patients, healthcare providers must follow consistent procedures and protocols to ensure that every patient receives the same level of care.

Financial transaction: when making financial transactions, it is important to follow regular security rules to prevent fraud.

Support rules: Adherence to consistent rules and regulations in sports is essential to ensure fair play and the safety of all participants.

2. The number 0 is important in mathematical systems because it represents the absence of a number and serves as a placeholder. Without zero, our mathematical system would be affected in many ways. For example, writing the number 100 would be difficult without the zero. Without the invention of zero, progress in mathematics would have been delayed.

learn more about consistent: https://brainly.com/question/14633769

#SPJ1

The ratio of the volume of pipe a to the volume of pipe b is 27:1  .

A cylinder is a three-dimensional shape consisting of two parallel circular bases, joined by a curved surface. The center of the circular bases overlaps each other to form a right cylinder.

Given that,

Radius of pipe a is 6 cm, and the radius of pipe b is 2 cm.

We know that the volume of cylinder is :- \(\pi r^{2}h\)

where r is radius and h is height of the cylinder.

If two figures are similar then ratio of volume is equal to the cube of any dimension.

The ratio of the volume of Pipe a to the volume of Pipe b  :-

\(\frac{V(a)}{V(b)}=\frac{6^{3} }{2^{3} }\)

       = \(\frac{27}{1}\)

Hence, The ratio of the volume of pipe a to the volume of pipe b is 27:1 .

To learn more about cylinder from the given link:

https://brainly.com/question/1392572

#SPJ4

Using mathematical operations, we know that Sofia will spend $56 and order 7 additional rolls of sushi (84 pieces).

An operation is a function in mathematics that transforms zero or more input values into a clearly defined output value.

The operation's arity is determined by the number of operands.

PEMDAS stands for Parentheses, Exponents, Multiplication, Division, and Addition Subtraction (from left to right).

So, they require at least 100 sushi pieces.

24 pieces of sushi had previously been ordered and paid for by Sofia.

Roll sushi is available.

Each roll = 12 pieces at $8

R = additional rolls that Sofia orders

Additional sushi = Needed sushi - ordered sushi

=100-24

=76 pieces of sushi

A roll contains 12 pieces.

76/12 = 6.33

Rolls must be ordered by Sofia.

She will therefore place 7 additional sushi rolls, each with 12 pieces.

12*7=84 pieces

Remember that they need at least 100 pieces, so there may be more than 100 in total.

84 pieces plus the 24 pieces Sofia has previously ordered.

The total number of pieces will be 108.

Therefore, using mathematical operations, we know that Sofia will spend $56 and order 7 additional rolls of sushi (84 pieces).

Know more about mathematical operations here:

https://brainly.com/question/28937023

#SPJ1

Complete question:
Sofia ordered sushi for a company meeting. They change plans and increase how many of people

will be at the meeting, so they need at least 100 pieces of sushi in total.

Sofia had already ordered and paid for 24 pieces of sushi, so she needs to order additional sushi.

The sushi comes in rolls, and each roll contains 12 pieces and costs $8. How many more sushi Sofia will order and of what amount?

Answer:

you have it correct sir

Step-by-step explanation:

The point (u, v) = (9, 2), the calculations for tu, tv, and n(u, v) for the parametrized surface g(u, v) = (2uv, u - 4v, 8u) are as follows:

tu = (2v, 1, 8),

tv = (2u, -4, 0),

n(u, v) = tu x tv = (32, 16u + 8v, -8u + 4v)

To calculate tu, we differentiate g(u, v) with respect to u, treating v as a constant. Similarly, to compute tv, we differentiate g(u, v) with respect to v, treating u as a constant. The cross product of tu and tv gives us n(u, v), the normal vector to the surface at the specified point (u, v).

Substituting the values u = 9 and v = 2 into the respective expressions, we obtain the values for tu, tv, and n(u, v) at the given point.

Learn more about Parametrized surfaces

brainly.com/question/31403360

#SPJ11

To find the derivatives of the given expressions, we can apply the chain rule, which states that the derivative of a composition of functions is equal to the derivative of the outer function multiplied by the derivative of the inner function.

(a) To find the derivative of f(g(x)), we start by differentiating the outer function f with respect to the inner function g(x), and then multiply it by the derivative of the inner function g(x) with respect to x.

df/dx = df/dg * dg/dx

df/dx = cos(g(x)) * (2x)

(b) To find the derivative of g(f(x)), we differentiate the outer function g with respect to the inner function f(x), and then multiply it by the derivative of the inner function f(x) with respect to x.

dg/dx = dg/df * df/dx

dg/dx = 2f(x) * cos(x)

Hence, the derivatives are:

(a) d/dx(f(g(x))) = cos(g(x)) * (2x)

(b) d/dx(g(f(x))) = 2f(x) * cos(x)

Learn more about the inner function here: brainly.com/question/32512446

#SPJ11

This equation is in slope-intercept form, where the slope is -400 (representing the amount Emily spends each week) and the y-intercept is 3,500 (representing the amount of money she initially saved).

The linear model for the amount of money Emily has remaining after spending $400 each week on rent, food, and activities can be written as M = -400w + 3,500. This equation is in slope-intercept form, where the slope of -400 represents the amount Emily spends each week and the y-intercept of 3,500 represents the initial amount she saved. As the number of weeks w increases, the amount of money Emily has remaining decreases linearly. This model allows Emily to predict how much money she will have at any point during her trip based on the number of weeks that have passed, which can help her budget effectively.

Learn more about the linear function models here: brainly.com/question/5101300

#SPJ4

Answer:

795

Step-by-step explanation:

First, we find the circumference of 1 ring.

c = 2πr

c = 2 × 3.14159 × 8.4 mm

c = 52.7787 mm

The circumference of 1 ring is the length of spooled gold used for 1 ring.

The spool has a total length of 42 m.

42 m × 1000 mm / 1 m = 42,000 mm

The spool has a total length of 42,000 mm.

Now we divide the length of the spool by the length of 1 ring.

42,000 mm / 52.7787 mm = 795.78

He can make 795 rings.

The lightest adequate W-section is the W14x38 section, which has a limiting size of 16 inches or less and a Zx value of 335 in^3.

To find the lightest adequate W-section using Fy-50 ksi steel, we need to calculate the value of Zx for the given load and space limiting conditions.

First, let's calculate the total factored load on the W-section. We have the uniformly distributed live load of 110 kips and the uniformly distributed dead load of 24 kips. The total factored load is the sum of the live load and the dead load:

Total Factored Load = Live Load + Dead Load
Total Factored Load = 110 kips + 24 kips
Total Factored Load = 134 kips

Now, let's calculate the maximum moment, which will help us determine the lightest adequate W-section. The maximum moment is given by the equation:

Maximum Moment = Total Factored Load * Length^2 / 8
Maximum Moment = 134 kips * (30 ft)^2 / 8
Maximum Moment = 134 kips * 900 ft^2 / 8
Maximum Moment = 134 kips * 112.5 ft^2
Maximum Moment = 15075 kip-ft

Next, we need to find the lightest adequate W-section by calculating Zx for different section sizes.

For the first condition, where the limiting size is 18 inches or less, we can consider a W18x35 section. The Zx value for a W18x35 section is 341 in^3.
For the second condition, where the limiting size is 16 inches or less, we can consider a W14x38 section. The Zx value for a W14x38 section is 335 in^3.
For the third condition, where the limiting size is 12 inches or less, we can consider a W12x40 section. The Zx value for a W12x40 section is 342 in^3.

To determine the lightest adequate W-section, we compare the Zx values for each condition. The W14x38 section has the lowest Zx value of 335 in^3, making it the lightest adequate W-section for this case.

So, the lightest adequate W-section is the W14x38 section, which has a limiting size of 16 inches or less and a Zx value of 335 in^3.

Know more about W-section:

https://brainly.com/question/32320737

#SPJ11

The simplified value of the expression "27 superscript one-third" is 3 , the correct option is (a) .

In the question ,

it is given that ,

the statement for the exponential expression is "27 superscript one-third" ,

which can be written in numbers as

= \(27^{\frac{1}{3} }\)

the number 27 can be expressed as product of number "3" ,

27 = 3 × 3 × 3 = 3³ ,

Substituting the value of 27 in the expression ,

we get ,

= \(3^{3\times \frac{1}{3} }\)  

= 3¹        ....because 3 × (1/3) = 1

= 3

So ,  \(27^{\frac{1}{3} }\) = 3 .

Therefore , the simplified value is 3 .

The given question is incomplete ,the complete question is

What is the simplified value of the exponential expression 27 superscript one-third ?

(a) 3

(b) 9

(c) 2

(d) 18

Learn more about Expression here

https://brainly.com/question/4482908

#SPJ4

The type of variable that represents the names of the automobile manufacturers would be the categorical variable.

A variable is defined as the quantity that may change within the context of a mathematical problem, research work or an experiment.

There are various types of variables that include the following:

Learn more about variables here:

https://brainly.com/question/30292654

#SPJ1

Answer:

  see attached

Step-by-step explanation:

I find it usually works well to draw the longest side first. Then draw arcs with radii equal to the other two side lengths. They will cross at an angle that makes the position of the third point easy to find.

Answer:

A. 1/6

B. 1

Step-by-step explanation:

A. 9/j x j/54= 9/54 = 1/6

B. 6k/8m : 3k/4m = 6k/8m : 4m / 3k = 2/2 =1

Answer:

a. 3/2

b. 1

Step-by-step explanation:

A. To simplify the expression, we can cancel out the common factor of j:

9/j * j/54 = (9/1 * 1/6) = 3/2

Therefore, 9/j * j/54 simplifies to 3/2.

B. To divide fractions, we can multiply the first fraction by the reciprocal of the second fraction. That is,

(a/b) ÷ (c/d) = (a/b) x (d/c)

Using this rule, we can simplify the given expression as follows:

6k/8m ÷ 3k/4m = (6k/8m) x (4m/3k)

             = (6/8) x (4/3)  

             = 2/2

             = 1

Answer:

Step-by-step explanation:

You can only multiply matrices if the number of columns in the matrix on the left is the same exact number as the number of rows in the matrix to the right of that other matrix.

The matrix on the left, |5 -2  4| has the dimensions

                                      1 x 3 (1 row, 3 columns)

The matrix to its right, |2  7  -3| has the dimensions

                                      1 x 3 (1 row, 3 columns).

Putting those dimensions next to each other in that order:

                  1 x 3     1 x 3

The bold print 3 and 1 have to be the same number (both 3's or both 1's) in order for the multiplication to work. This doesn't work; it's impossible.

Answer: -16

Step-by-step explanation:

i was on a unit exam typing in random numbers since i didn't know it and -16 is the right answer.

Answer:

The answer is 12

Given:

Radius of a circle = 2.1 units

Arc length = 21.2 units

To find:

The central angle in radians to the nearest 10th.

Solution:

We know that the intercepted arc length is

\(s=r\theta\)

Where, s is the arc length, r is the radius and \(\theta\) is the central angle in radians.

Putting the given values, we get

\(21.2=2.1\theta\)

\(\dfrac{21.2}{2.1}=\theta\)

\(10.095238=\theta\)

\(\theta\approx 10.1\)

Therefore, the angle in radians is 10.1.

The measure of each angle formed by the three support beams for a bridge is 45 degrees.

The question states that three support beams for a bridge form a pair of complementary angles. Complementary angles are two angles that add up to 90 degrees.

Let's denote the angles as Angle A and Angle B. Since the angles are complementary, we can set up the following equation:

Angle A + Angle B = 90 degrees.

To find the measure of each angle, we need to divide 90 degrees by 2 since there are two angles.

Angle A = Angle B = 90 degrees / 2 = 45 degrees.

Therefore, each angle measures 45 degrees.

Learn more about Complementary angles :

https://brainly.com/question/15380971

#SPJ11

The measure of each angle is 45 degrees.

To find the measure of each angle, we need to understand what complementary angles are. Complementary angles are two angles that add up to 90 degrees.

In this case, we have three support beams for a bridge that form a pair of complementary angles. Since the angles are complementary, their sum is 90 degrees.

Let's assume the measure of one angle is x degrees. The other angle will be (90 - x) degrees, as their sum is 90 degrees.

Since the three support beams form a pair of complementary angles, we can set up the equation:

x + (90 - x) = 90

By simplifying the equation, we have:

90 - x + x = 90

90 = 90

This equation is true for any value of x. Therefore, the measure of each angle can be any value, as long as their sum is 90 degrees.

So, the measure of each angle is not fixed, but it will always add up to 90 degrees.

To know more about Angle, visit:

brainly.com/question/33854211

#SPJ11