How do you do this question?

Answer:

Allocation: 4 samples should be from the mountain and 16 from along the coast.

Step-by-step explanation:

Neyman allocation is technique of sample allocation used in cases of stratified sampling.

The formula to compute the best sample size of each stratum is:

[tex]n_{h}=n\times \frac{(N_{h}\times SD_{h})}{\sum\limits^{k}_{i=1}(N_{i}\times SD_{i})}[/tex]

The information provided is:

[tex]N_{m}=50\\N_{c}=100\\n=20\\[/tex]

Compute the range for the number of people at the mountain campsite as follows:

[tex]R_{m}=6-1=5[/tex]

Then the standard deviation for the number of people at the mountain campsite will be:

[tex]SD_{m}=\frac{R_{m}}{4}=\frac{5}{4}[/tex]

Compute the range for the number of people along the coast campsite as follows:

[tex]R_{c}=10-1=9[/tex]

Then the standard deviation for the number of people along the coast campsite will be:

[tex]SD_{c}=\frac{R_{c}}{4}=\frac{9}{4}[/tex]

Compute the sample size for the mountain campsite as follows:

[tex]n_{m}=n\times \frac{(N_{m}\times SD_{m})}{(N_{m}\times SD_{m})+(N_{c}\times SD_{c})}[/tex]

    [tex]=20\times \frac{(50\times (5/4))}{(50\times (5/4))+(100\times (9/4))}\\\\=20\times 0.2174\\\\=4.348\\\\\approx 4[/tex]

Compute the sample size for along the coast campsite as follows:

[tex]n_{c}=n-n_{m}=20-4=16[/tex]

Thus, 4 samples should be from the mountain and 16 from along the coast.

Answer:

;)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))

Outcome:

Reported

Reason:

Sorry, but this isn't a question. It violates the Community Guidelines, and it isn't the purpose of Brainly. The purpose of brainly is to help people with homework or questions they have and rewards people who help other people. This question is giving free points to people regardless if they were a help or not.

Answe67

Step-by-step explanation:

I can't see the semi circle is that image. From what I see, the perimeter of the trapezoid is 41.

Answer:

C:"As time dragged on, she sang to pass the hours."

Step-by-step explanation:

Work from left to right:

190-87 = 103

103 + 16 = 119

The answer is D. 119

Answer:

C. 87

Step-by-step explanation

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Step 1: Addition

87 + 16 = 103

Step 2: Subtraction

190 - 103 = 87

Step 3: Check your answer

87 + 103 = 190

Answer:

Although the image has two terms inside the parenthesis rather than three terms in the question, we can apply it to this question.

The

2

multiplies to everything inside the parenthesis:

(

2

⋅

x

)

+

(

2

⋅

−

5

)

+

(

2

⋅

2

)

=

6

Now simplify by multiplying:

2

x

−

10

+

4

=

6

Combine

−

10

+

4

:

2

x

−

6

=

6

Add

6

to both sides:

2

x

−

6

+

6

=

6

+

6

2

x

=

12

Divide both sides by

2

2

x

2

=

12

2

x

=

6

Hope this helps!

Answer:

[tex]\huge\boxed{\sf{2x+10}}[/tex]

Step-by-step explanation:

Hello.

Please remember the formula for the Distributive Property:

a(b+c)=ab+ac, where a, b, and c can be variables (letters) or constants (numbers)

Now that we know the formula for the Distributive Property, let's distribute:

2(x+5)

2x+10

I hope it helps.

Have a great day.

[tex]\boxed{imperturbability}[/tex]

Answer:

2: 4

3:32

Step-by-step explanation:

so you are first going to solve in the parentheses and then solve the exponents

Answer:

lemons is greater ratio

Step-by-step explanation:

cause the ratio is larger

lemons to water

5:2

2:1

simplify....

2.5:1

2:1

lemons is greater ratio

Answer:

Emma's recipe will be more "lemony"

Step-by-step explanation:

If you are to take Clair's recipe and multiply it x2 so that the common denominator (cups of water) is equal, it will show you that Emma's recipe has more lemons in it; therefore will be more "lemony"

Answer:

V=14.14ft^3

Step-by-step explanation:

V=4/3(π)1.5^3

=4/3(π)3.375

=14.14ft^3

Answer:

14.1 ft³ (to 3 s.f.)

Step-by-step explanation:

[tex]\boxed{volume \: of \: sphere = \frac{4}{3}π{r}^{3} }[/tex]

Given that the radius is 1.5 feet, substitute r= 1.5 into the formula above:

Volume of sphere

[tex] = \frac{4}{3} (π)( {1.5}^{3} ) \\ = 14.1 \: ft^{3} [/tex]

(to 3 s.f.)

Answer: $1150

Step-by-step explanation:

[tex]p +\frac{1p}{2} =1750[/tex]

[tex]\frac{2p}{2} +\frac{1p}{2} =1750[/tex]

[tex]\frac{3p}{2} =1750[/tex]

[tex]3p = 3450\\[/tex]

[tex]p = 1150[/tex]

Answer:

1 mile

Step-by-step explanation:

Step-by-step explanation:

Hey there!

Given;

Ratio = 9:8:7

Let "x" be the common factor. So,

9x+8x+7x = 144

or, 24x = 144

or, x = 144/24

or, x= 6

It's like;

= 9*6:8*6:7*6

= 54:48:42

Therefore, their ratio is 54:48:42.

Hope it helps...

the simplest ratio of the Squares to the circle is 4:1.

The ratio can be defined as the number that can be used to represent one quantity as a percentage of another. Only when the two numbers in a ratio have the same unit can they be compared. Ratios are used to compare two objects.

Given, There are 16 squares and 4 circles.

Since there are 16 squares for 4 circles

The ratio of the Squares to the circle = 16/4

The ratio of the Squares to the circle = 4/1

Therefore, the simplest ratio of the Squares to the circle is 4:1.

Learn more about ratios here:

https://brainly.com/question/13419413

#SPJ2

Answer:

7

Step-by-step explanation:

Mark me brainlist

Answer:

Number line from negative 10 to positive 10 in increments of 1 is shown. Only the whole numbers are labeled. A point labeled R is placed between the 4th and 5th tick marks to the left of 0. A point labeled T is placed on the 3rd tick mark to the right of 0.

Step-by-step explanation:

The points given are (-4.5,0) and (3,0), which means the points are on the x-axis. Point R (-4.5,0) will be located to the left of 0, the negative side of the number line between the 4th and 5th marks. Point T (3,0) will be located to the right of 0, the positive side of the number line at the 3rd mark.

The second answer is incorrect because point (-4.5,0) is not on the right side of 0 but on the left side.

The third answer is incorrect because point T(3,0) is place between 2 and first mark instead of the third mark.

The fourth answer is incorrect because R (-4.5,0) is placed on the first mark instead of between 4th and 5th mark.

Answer:

Number line from negative 10 to positive 10 in increments of 1 is shown. Only the whole numbers are labeled. A point labeled R is placed between the 4th and 5th tick marks to the left of 0. A point labeled T is placed on the 3rd tick mark to the right of 0.

Answer:

21 because it all postive and equls

Step-by-step explanation:

Answer:

15 and 26

Step-by-step explanation:

Answer:

Rita is 17 years old and Cheryl is 7

Hope this Helps :)

Step-by-step explanation:

Answer:

( − 5 , 1 )

Step-by-step explanation:

Use the midpoint formula to find the midpoint of the line segment.

Answer: y=-3x+17

b = 17

Answer:

a

Step-by-step explanation:

Double negatives make a positive. Hope this helps!

Answer:

Each pencil costs $1.25

Step-by-step explanation:

$18.74 - 4.99=13.75

13.75/11=$1.25

You have to take the total amount and subtract how much the paper pad costs then you get 13.75 and that is how much the student paid for all 11 pencils so you divide it by 11 and you get $1.25

Answer:

 =  − 4

Step-by-step explanation:

Answer:

y=x+1

Step-by-step explanation:

The first step I took was to find the slope. A slope is equal to the rise over the run. The equation goes up 2 for every 2 it goes over, which means that the slope is 2/2 or 1. Then you need to determine the y intercept. I usually go about this by thinking logically about the problem. Because there is a point at (4,5) and the slope is 1, there must also be a point at (3,4) (2,3) (1,2) and (0,1) Because the x value in (0,1) is 0, we know that the y intercept must be 1, so I added 1 to the equation. The last step is putting it all together. We know that a linear equation is y=mx+b (m being the slope, b being the y-intercept) so the final equation is y=x+1

Answer:

7,300,000

Step-by-step explanation:

The rounding of the hundred thousands place depends on the ten thousands place which depends on the thousands place. there was a 4 in the ten thousands place which means you would round down.