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a) The margin of error associated with a 95% confidence interval is 4.

b) The 95% confidence interval for the mean price charged by discount brokers for a trade of 100 shares at $50 per share is ($29.77,$37.77)

a) We are given with the information that the mean for 54 discount brokers is $50 for 100 shares is $33.77 Also the population standard deviation is $15.

The formula for margin of error is Z  = zα/2 σ √ n

Now we know from our z-table that value of zα/2 for 95% confidence interval is 1.96

So, the value of error margin is  zα/2 σ √ n =1.96 (15/√54) = 1.96 x 2.04

= 4

b) We know from part a that margin of error is 4.

Also, the mean price charged for a trade of 100shares at 50 per share was $33. 77

The value of confidence interval for population mean is,

x ± zα/2 σ √ n = 33.77 ± 4 = (29.77,37.77)

Thus, the 95% confidence interval for the mean price charged by discount brokers for a trade of 100 shares at $50 per share is ($29.77,$37.77)

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Answer:

Any equation that has the same slope as this line will be parallel to it. The slope is -1/4, so whichever equation has -1/4 x in it will be parallel to the line.

To find the parallel line of y =3z+6 passing through the slope intercept points (-2,5).

For a line to be parallel to another line, by definition it must have the same slope.

Because the equation is in the slope-intercept form we can use the slope of the line.

The slope- intercept form of a linear equation is :

y=mx+b

Where m is the slope and b is the y− intercept value.

Therefore, for the given equation, the slope is 3.

Now we can use the point slope formula to determine the equation for the parallel line.

The point - slope formula states: (y−y1)=m(x−x1)

Where m is the slope and (x1,y1) is a point the line passes through.

Substituting the slope from the given line and the given point gives:

y−5=3(x+2)

Transforming this to the slope-intercept form by solving for y gives:

y−5=3x+6

y−5+5=3x+6+5

y=3x+11

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Answer:

10 days

Step-by-step explanation:

Step-by-step explanation:

so the ticket booth had $150 so $1254 -$150=$1104

so $1104 ÷ by $3 each person = to 368 people paid the admission

Had: $150

Tickets :368

Total :$1254

27 containers are needed to hold all the fuel from 12 tanks.

We are given that each tank holds 22.5 cubic yard of fuel, the weight of 1 yd³ (cubic yard) of fuel is equal to .74 tons, and each container holds 7.4 tons of fuel. Solving this problem would involve converting units.

In order to find out how many containers of the size are needed to hold all the fuel from 12 tanks, first we need to find how much fuel is delivered by 12 tanks. Since 12 x 22.5 = 270, 12 tanks are used to deliver 270 yd³ of fuel.

Next we convert it to tons. Recall that 1 yd³ of fuel is equal to .74 tons. Therefore, 270 yd³ = 270 x  .74 = 199.8 tons.

A container holds 7.4 tons of fuel. 199.8 ÷ 7.4 = 27, hence 27 containers are needed to hold all the fuel.

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Answer: the answer would be 2

Step-by-step explanation: f(x) means that for every x you are going to multiply it by the value it gives you in this case it is 3.

2x3=6-4=2

Step-by-step explanation:

one side.

as each tile is guaranteed an equilateral triangle, all sides are equally long. measuring 1 side clarifies therefore the overall size of the tile.

the angles are the same in any case, as every equilateral triangle (no matter its size) has only angles of 60°.

so, if any side has the same length as the side lengths of the other triangles, then the checked triangle is congruent with the others.

Answer:

Step-by-step explanation:

Answer:

200 at 9% simple interest for 2 years

Answer:

a

Step-by-step explanation:

Hope it helps and have a nice day!!!! :)

The person who runs fastest is Zach.

Ron runs 9 feet per second: 9 ft/s

Zach runs 410 feet in 49 seconds:

410/49 ft/s

=8.36 ft/s

= 8.4 ft/s (Approximately)

Katie runs 1 mile in 412 seconds:

1 mile = 5280 ft

5280/412 ft/s

=12.8 ft/s

Noah  runs 870 feet in 1 minute:  

= 870/60 ft/s

= 14.5 ft/s

Hence,

Ron 9 feet per seconds

Zach 8.4 feet per seconds

Katie  12.8 feet per seconds

Noah 14.5 feet per seconds

So, Zach is the fastest.

Therefore the fastest is Zach.

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Answer:

-3.5

Step-by-step explanation:

-4x-1+1≤ 13+1

-4x/-4 ≤ 14/-4

x≤ -3.5

1/24 is the probability that the two chosen tiles differ with respect to all three properties

1/2  chance that the tiles materials will be different (wood or plastic). 1/3 chance exists that the tiles will have different colors (r, y or b) 1/4 chance where the tile shapes will change (t, s, p or c)the probability that all three attributes of the two tiles will be different.1/2 * 1/3 * 1/4 = 1/24 The probability of an event occurring is a measure of its likelihood. It assesses the likelihood of an event. P(E) = Number of Favourable Outcomes/Total Outcomes is the probability formula.

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The arrangement of the points in increasing order of the slopes are (27, 2) and (243, 18),  (63, 9) and (84, 12), (45, 15) and (60, 20), (27, 12) and (72, 32), (15, 30) and (20, 40),  (12, 32) and (18, 48), (18, 63) and (24, 84)

Slope is defined as the change in y divided by the change in x. Mathematically:

Slope = (y2 - y1) / (x2 -x1)

To arrange the pair of points. You need to find the slope:

For (15, 30) and (20, 40):

x1 = 15, y1 =30 and x2 =20, y2=40

slope = (40-30)/(20-15) = 10/5 =2

For (12, 32) and (18, 48):

slope = (48-32)/(18-12) = 16/6 = 2.67

For (27, 12) and (72, 32):

slope = (32-12)/(72-27)  = 20/45 = 0.44

For (45, 15) and (60, 20):

slope = (20-15)/(60-45) = 5/15 = 1/3 = 0.33

For (27, 2) and (243, 18):

slope = (18-2)/(243-27) = 16/216 = 0.07

For (18, 63) and (24, 84):

slope = (84-63)/(24-18) = 21/6 = 7/2 = 3.5

For (63, 9) and (84, 12):

slope = (12-9)/(84-63) = 3/21 = 1/7 = 0.14

Therefore, the pairs of points in increasing order of the slopes are (27, 2) and (243, 18),  (63, 9) and (84, 12), (45, 15) and (60, 20), (27, 12) and (72, 32), (15, 30) and (20, 40),  (12, 32) and (18, 48), (18, 63) and (24, 84)

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The  residual value is 0.6.

The estimated value of a fixed asset at the conclusion of its useful life or lease term is known as the residual value, also known as salvage value. In lease agreements, one of the lessor's main methods for figuring out how much the lessee must pay in periodic lease payments is the residual value.

Given:

y = 1.416x − 0.76

For (7, 8):

As, residual value = Measured value - Predicted value

or, residual value = (actual y-coordinate of the point) - (value of y from the

                                                                                                       equation)

When x = 10:

So, the value of y from the equation,

[tex]y_1[/tex] = 1.416 x 10 - 0.76

[tex]y_1[/tex]=  14.16 - 0.76

[tex]y_1[/tex]= 13.4

and, actual y-coordinate of the point, [tex]y_2[/tex]= 14

Residual value = 14 - 13.4

Residual value = 14 - 13.4

Residual value = 0.6

Hence, the residual value is 0.6

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Answer:

0.6

Step-by-step explanation:

im taking the test rn

Based on the given ratio of modern and classical songs learned, the number of modern songs learned if 9 classicals have been learned is 15

If the choir has learned 9 classical songs;

Equate the ratio of the number of modern songs to the number of classical songs

5 : 3 = x : 9

5/3 = x/9

5 × 9 = 3 × x

45 = 3x

divide both sides by 3

x = 45/3

x = 15

In conclusion, the number of modern songs they have learned if they learn 9 classical songs is 15

Complete question:

Raymond sings in a choir called the Seaville Songbirds. For every 5 modern songs they learn, the choir leader teaches them 3 classical songs.

If the choir has learned 9 classical songs, how many modern songs have they learned?

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Answer: check the image attached

Step-by-step explanation:

Hope this helps

Answer:

Just point the graph on Y=33x+0

Step-by-step explanation:

There's no B or starting point, so you would just plant the point on 0,33

2/216 or 1/108 is the probability of rolling a number .

How does probability explain work?

The great thing about this question is that all three of those rolls are Independent Scenarios.

The probability of the first roll does not effect the outcome of the second or third roll

   1/6 ( we want a 1, and there are 6 options.)

1/6 ( We want a 3, and there are 6 options

2/6 ( We want a 5 or 6, and there are 6 options)

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Answer:

2x2x3x5= 60

I hope you like it

Answer:

2 X 2 X 3 X 5

Step-by-step explanation:

We divide 60 by 2 as many times as possible to get 60 = 15 x 2 x 2. 2 is a prime number so we don't need to break the 2's down any more. Instead we break 15 down. 15 doesn't divide by 2 so we try the next prime number: 3 Divide 15 by 3 to get 15 = 5 x 3, and so 60 = 5 x 3 x 2 x 2. Now we collect the factors, so our final answer is 60 = 5 x 3 x 22.

Utilizing multiplication to find relationships and predicting that value of one  "Linear regression" is a quantity derived from the value of another.

The relationship in between magnitude of one parameter and that of a second is modeled by simple linear regression.

Thus, finding correlations via multiplication and assuming that the value of one "Linear regression" is a number obtained as from value of another

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Answer:

Step-by-step explanation:

Hi Mia,  are you aware that the last name Hamilton is a famous math person?  :)    anyway,  

The triangle in the picture is an isosceles triangle,  we know that b/c the angle of the one is 45° meaning the other side must also be a 45° angle.  So we know the two sides are the same length.

side n = 7 [tex]\sqrt{2}[/tex] / 2

then use Pythagoras to find m

[tex]c^{2}[/tex] = ( 7 [tex]\sqrt{2}[/tex] / 2)^2  + ( 7 [tex]\sqrt{2}[/tex] / 2)^2

[tex]c^{2}[/tex] = 49*2/4  + 49*2/4

[tex]c^{2}[/tex] = 49/2  + 49/2

[tex]c^{2}[/tex] = 98/2

[tex]c^{2}[/tex] = 49

c = 7

side m = 7   :)  nice, huh ?

a) Sin X = O/H

Sin 45 = [tex]7\sqrt{2}[/tex]/2/H

H= [tex]7\sqrt{2}[/tex]/2/ Sin 45

m= 7

b) cos X = A/H

   cos 45= A/7

A= cos45*7

n= 4.95

Diagonal of rectangle is changing by the rate of 4.373 in. /sec.

Rate of change (ROC) is the rate at which a variable changes over a particular period of time

To find the average rate of change, divide the change in the y-values ​​by the change in the x-values . Finding the average rate of change is especially useful for identifying changes in measurable values ​​such as average speed or average velocity.

A ratio is a special ratio in which the two terms have different units.

the calculation part is shown in the below picture attached .

so after seeing the solution we come to an answer of = 4.373 in./sec

therefore diagonal of rectangle is changing by the rate of 4.373 in. /sec

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A. The translations used in the transformation of f(x) to g(x) can be given as follows:

B. The solutions for k are given as follows:

C. The rules are given as follows:

There are four cases for the translation of an image, and they can be represented as follows:

From the graph of the linear functions shown at the end of the answer, two translations are possible, listed as follows:

The values of k are equivalent to the values of a in the bullet points listing the translations above, and the equations were also built from those bullet points.

The lines are shown by the image at the end of the answer.

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Answer:

14.5 feet

Step-by-step explanation:

     To make the subject as 'w', isolate w.

              2L + 2W =P

                      2W = P - 2L

                        [tex]\sf W = \dfrac{P-2L}{2}\\\\W =\dfrac{P}{2}-\dfrac{2L}{2}\\\\ \boxed{W = \dfrac{P}{2}-L}[/tex]

   P = 37 feet

   L = 4 feet

           [tex]\sf W =\dfrac{37}{2}-4\\\\[/tex]

                = 18.5 - 4

           W = 14.5 feet

The coordinate geometry, the midsegment theorem shows that the midsegment of a triangle is 1/4 area of the triangle.

How to show that the midsegment of a triangle is 1/4 area?

The midsegment if a triangle is defined as a line that joins two midpoints of two opposite sides of a triangle.

The midsegment theory of a triangle states that in a triangle, the midsegments of 2 sides is parallel to, and half the length of the 3rd side.

The 3 midsegments of a triangle forms a small triangle within the larger triangle.

This therefore, forms 4 triangles.

Area of a triangle =base x height

Hence 4 triangles are formed,

The area of the larger triangle is [tex]\frac{bh}{4}[/tex] =1/4(bh)

Therefore;  Area =1/4 of area.

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The rationalization of the denominator of the given fraction gives 8 -2√3

From the question, we are to rationalize the denominator of the given fraction

The given fraction is

26 / (4+√3)

To rationalize the given expression, we will multiply both the numerator and the denominator of the fraction by the conjugate of the denominator.

The denominator is 4+√3

Thus,

The conjugate of the denominator is 4-√3

Now, multiply the numerator and the denominator by the conjugate.

That is,

(26 × (4-√3)) / ((4+√3) × (4-√3))

(104 - 26√3) / (16 - 3)

(104 - 26√3) / 13

= 104/13 - (26√3)/13

= 8 - 2√3

Hence,

The result of rationalizing is 8 -2√3

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Answer :

9 girls and 18 boys don't have a voucher

Step-by-step explanation :

There are 38 boys and 22 girls.  The total number of children is 60.  We know that 33 children have a voucher.  27 children don't have a voucher. ( 60 - 33 = 27 ) .

"Twice as many boys as girls do not have a voucher."

We can now make an equation.

The girls who do not have a voucher will be x, boys who don't have a voucher will be 2x, since it says twice as many boys.

We can now make our equation.

x + 2x = 27

Add x and 2x

3x = 27

Divide both sides by 3

x = 9

We know now that girls who don't have a voucher is 9.

The boys who don't have a voucher is 2x, so we plug 9 instead of x.

2(9) = 18.

18 boys do not have a voucher.

If you would like the rest for the frequency tree...

Total students : 60

Boys : 38

Boys who don't have a voucher : 18

Boys who have a voucher : 20

Girls : 22

Girls who don't have a voucher : 9

Girls who have a voucher : 13

Hope this helped.