Can you please help pleaseeee

Answer:

The 95% confidence interval for the proportion of residents who think traffic is getting worse in their community is (0.2978, 0.3630).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].

In a survey of 802 U.S. adult drivers, 265 state that traffic is getting worse in their community.

This means that [tex]n = 802, \pi = \frac{265}{802} = 0.3304[/tex]

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3304 - 1.96\sqrt{\frac{0.3304*0.6669}{802}} = 0.2978[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3304 + 1.96\sqrt{\frac{0.3304*0.6669}{802}} = 0.3630[/tex]

The 95% confidence interval for the proportion of residents who think traffic is getting worse in their community is (0.2978, 0.3630).

Answer:

1. the difference in price is that Bigfoot is $60/$65 more expensive than lazer liner

lazer liner is $5 or 0 if its that misleading

2. no $5 difference

3. because electro is misleading and is only 11 dollars while The blade is 75$ The difference in price is $64

4. maker the bars that are misleading below and add the lower prices under with them. And add lines and small lines that says a dollar or 5 dollar per line.

[tex]\huge{ \mathfrak{ \underline{question : }}}[/tex]

Select the two binomials that are factors of this trinomial.

[tex]x_2 + 8x + 12[/tex]

[tex]\huge{ \mathfrak{ \underline{Answer : }}}[/tex]

We got the factors as :

[tex]A. \: (x + 6)[/tex]

and

[tex]D. \: (x + 2)[/tex]

[tex] \#TeeNForeveR[/tex]

Answer:

A&D

Step-by-step explanation:

Step-by-step explanation:

[tex]time = \frac{(final \: - \: initial \: displacement)}{(final - initial \: velocity)} \\ time = \frac{0 - 120}{0 - 8} \\ time = 15 \: seconds[/tex]

Answer:

x=-2, y=1. (-2, 1).

Step-by-step explanation:

y=x+3

y=2x+5

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

x+3=2x+5

3=2x-x+5

3=x+5

x=3-5

x=-2

y=-2+3=1

Answer:

4.21399176955

Step-by-step explanation:

[tex]\frac{3}{4}^{-5}[/tex]

[tex]0.75^{-5}[/tex]

4.21399176955

Answer:

P(X, Y) = 1/(20.398 ) if X ∈ (2, 8.2) and Y ∈ (3.01, 6.3)

P(X, Y) = 0 if  X ∉ (2, 8.2) and Y ∉ (3.01, 6.3)

Step-by-step explanation:

We know that the possible values of X (all with the same probability) are:

2 < X < 8.2

And for Y we have the range (also uniform):

3.01 < Y < 6.3

Then we have a rectangle of area.

(8.2 - 2)*(6.3 - 3.01) = 20.398

Such that the probability for all the points inside the rectangle should be exactly equal, then we will have:

P(X, Y) = 1/(20.398 ) if X ∈ (2, 8.2) and Y ∈ (3.01, 6.3)

Such that if we integrate this in the given region, the integral will be equal to 1, as we should expect.

And zero if the point is outside that region, this is:

P(X, Y) = 0 if  X ∉ (2, 8.2) and Y ∉ (3.01, 6.3)

Answer:

15.87 m

Step-by-step explanation:

Length of ladder = hypotenus = 24 m

Height, opposite = 18m

Foot of ladder from the wall = x

Using Pythagoras rule :

Hypotenus² = opposite² + Adjacent²

x² = hypotenus² - opposite²

x² = 24² - 18²

x² = 576 - 324

x² = 252

x = √252

x = 15.87 m

Answer:

4.

Solution given:

length of base[a]=2.2m

slant height [l]=1.9m

Total surface area=?

we have

Total surface area of a square pyramid :

area of base+ curved surface area

:a²+2al

:2.2²+2*2.2*1.9

:13.20 m²

SoA. 13.20 sq m is a required answer.

5.

Solution given:

length [l]=15cm

wide [w]=10cm

height[h]=8cm

total surface area of cuboid =?

we have

total surface area of cuboid =sum of area of all side.

=2[lw+lh+wh]

=2[15×10+15×8+10×8]

=700cm²

D. 700 sq cm is a right answer.

Answer:

The correlation between two variables, let's say A and B, is given by:

[tex]r(A.B) = \frac{ \sum{A*B}}{ \sqrt{\sum{A^2}* \sum{B^2}}}[/tex]

In our case, we know that:

y = 2*x

And:

r(X, Z) = 0.45

Then:

Now we want to find:

r(Y, Z)

Let's start with r(X, Z)

We know that:

X = Y/2

Then we can replace that in the correlation equation:

[tex]r(X.Z) = \frac{ \sum{X*Z}}{ \sqrt{\sum{X^2}* \sum{Z^2}}} = 0.45 \\[/tex]

[tex]r(Y/2.Z) = \frac{ \sum{(Y/2)*Z}}{ \sqrt{\sum{(Y/2)^2}* \sum{Z^2}}} = 0.45 \\[/tex]

[tex]r(Y/2, Z) = \frac{ (1/2)*\sum{Y*Z}}{\sqrt{ (1/4)\sum{(Y)^2}* \sum{Z^2}}} = \frac{ \sum{(Y)*Z}}{ \sqrt{\sum{(Y)^2}* \sum{Z^2}}} = 0.45[/tex]

And in the third part, we have r(Y,Z), then:

[tex]r(Y, Z) = \frac{\sum{Y*Z}}{\sqrt{\sum{Y^2}*\sum{Z^2}}} = 0.45[/tex]

The correlation of z with y is 0.45

Answer:

[tex]7y-10[/tex]

Step-by-step explanation:

[tex]9y-\frac{1}{2}\left(4y+20\right)[/tex]

To simplify this expression, first use the distributive property to distribute [tex]\frac{1}{2}[/tex].

[tex]9y-\frac{1}{2}(4y)+-\frac{1}{2}(20)[/tex]

Simplify.

[tex]9y+-2y+-10[/tex]

Combine like terms, [tex]9y[/tex] and [tex]-2y[/tex].

[tex]7y-10[/tex]

The simplification of [tex]9y-\frac{1}{2}(4y+20)[/tex] is [tex]7y-10[/tex].

I hope this helps ^^

Good luck

Answer:

10π ft.

Step-by-step explanation:

Circumference = diameter * π.

Given :

The diameter D of sphere is 7.4 mm .

To Find :

The volume of sphere.

Solution :

Radius of sphere is r = D/2 .

r = 3.7 mm .

We know, volume of sphere is given by :

[tex]V = \dfrac{4\pi r^3}{3}\\\\V = \dfrac{4\times 3.14 \times 3.7}{3}\ mm^3\\\\V = 15.5 \ mm^3[/tex]

Hence, this is the required solution.

Answer:

1568 grams

Step-by-step explanation:

32 x 28 = 896 ][ 16 x 28 = 448 ][ 8 x 28  = 224 ; 896 + 448 + 224 = 1568

Answer:

4 and 6

Step-by-step explanation:

they are made with lines of the other angles

Answer:

I think the exterior angles are angle 4, angle 6, and angle 2.

Step-by-step explanation:

They are on the outside.

Answer:

(-3 1/3, -1 1/3) Quadrant lll

(1/3, 2 1/3) Quadrant l

(-1 1/3, 3 1/3) Quadrant ll

(9, -1) Quadrant lV

(-3,-10) Quadrant lll

(1 1/3, -1 1/3) Quadrant IV

Step-by-step explanation:

Hope this helps! Ask any questions in the comments <3

Answer:C.

each pair of triangles below

UT/IF:TQ/IK:IQ/KF

14/44.8:20/64

5/16:5/16

since they are similar

D.

<R=<K=96°

<J=<X=32°

<Q=<K=52°

since corresponding angle are equal.

they are similar

JR/XV:RQ/KV:JQ/XK

similarity condition are:

the corresponding side are proportional and angle are equal.

9514 1404 393

Answer:

  c. no

  d. yes; AA postulate

Step-by-step explanation:

c. The marked sides have the same ratio ...

  20/14 = 10/7 = 64/44.8

However, the angle between them is not marked as being the same. We cannot conclude the triangles are similar.

__

d. Missing angle R is 180° -32° -52° = 96°. So, two of the angles in the triangles match. (32° and 96°) ∆RQJ ~ ∆VKX by the AA postulate.

Step-by-step explanation:

36A) AB = 4/ sin 30° = 4/ 0.5 = 8 cm

36B) AC = 4/ tan 30° = 4/ 0.577 = 6.9 cm

36C) BD = 4/sin 45° = 4/ 0.707 = 5.7 cm

36D) area of ∆ABC = ½×6.9×4= 13.8 cm²

36E) sin A = sin 30° = 0.5

Answer:

The last one.

Step-by-step explanation:

It's the one that has a lot of points (from 11-16) and then one point just chilling on 5. That one point is the outlier. Hope this helps! Have a nice day :)

Answer:

their marriage and 2 years before

Answer:

A

Step-by-step explanation:

surface area = length x width x depth

so 5x5x7=175.

Answer:

53

Step-by-step explanation:

Sum of interior angles of a pentagon = 540°

Therefore,

2x° +2x° + 3x° + 3x° + 10 = 540°

10x° + 10° = 540°

10x° = 540° - 10°

10x° = 530°

10x = 530

x = 530/10

x = 53

Answer:

-5

Step-by-step explanation:

Sorry if I'm wrong.

q=2 when p=14.   14-2= 12. There is a difference of 12 between these numbers.  

q= ? when p=7. 7-12= -5.

Hope this helps :)

Answer: The result is statistically significant, which implies that spraying the corn plants with the new type of fertilizer does increase the growth rate.

Step-by-step explanation:

The statement that is true about the result considering a significance level of 5% is B. The result is statistically significant, which implies that spraying the corn plants with the new type of fertilizer does increase the growth rate.

This refers to the analysis of numbers and data to make an inference about a thing.

Hence, we can see that based on the research made about the growth rate of corn, we can see that from the significance level of 5%, we can see that spraying the corn plants with the new type of fertilizer does increase the growth rate.

Read more about statistics here:

https://brainly.com/question/12150562

#SPJ2

Answer:

C

Step-by-step explanation:

Answer:

3000 in3 ? I haven't actually done this i-ready before- but I believe it's

Width x Length x Height = Final result?

Step-by-step explanation:

Answer:

maybe 8. this seems like it is missing something. I might just be too tired though...

Answer:

3.8×10^7= 38000000

1.9×10^6= 1900000

38000000÷1900000= 20

the population of California is 20 greater than the population of Nebraska

Answer:

A. (0,1,2,4,6,8,9) is ur Answer

Answer:

A

Step-by-step explanation:

Answer:

>

Step-by-step explanation:

41/8 = 5.125