The registrar keeps an alphabetical list of all undergraduates, with their current addresses. Suppose there are 10,000 undergraduates in the current term. Someone proposes to choose a number at random from 1 to 100, count that far down the list, taking that name and every 100th name after it for the sample. a) Is this a probability method?
b) Is it the same as simple random sampling?
c) Is there selection bias in this method of drawing a sample?

Answers

Answer 1

Answer:

Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

Following are the description of the given points:

(a) This is a system of probability, which possibility occurs inside an intended manner whenever they choose this specific point of origin from 1 to 100 with no one reserve the possibility about who gets throughout the survey.

(b) Its method is different from the random sampling technique with the base available. For example, two individuals whose names identical to both the list have no chance to join within the survey.

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Help me. I will mark brainliest

Answers

Check the picture below.

$20x+5y=110\implies 20x=110-5y\implies x=\cfrac{110-5y}{20} \n\n\n x=\cfrac{110}{20}-\cfrac{5y}{20}\implies x=\cfrac{11}{2}-\cfrac{y}{4} \n\n[-0.35em] ~\dotfill\n\n (20x + 5y) + 40 + (2x + 5y) = 180\implies \stackrel{(20x + 5y)}{110} + 40 + (2x + 5y) = 180 \n\n\n 150+2x+5y=180\implies 150+2\stackrel{ x }{\left( \cfrac{11}{2}-\cfrac{y}{4} \right)}+5y=180 \n\n\n 150+11-\cfrac{y}{2}+5y=180\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{2}}{2\left( 150+11-\cfrac{y}{2}+5y \right)=2(180)}$

$300+22-y+10y=360\implies 322+9y=360\implies 9y=38 \implies \boxed{y=\cfrac{38}{9}} \n\n\n \stackrel{\textit{since we know that}}{x=\cfrac{11}{2}-\cfrac{y}{4}}\implies x=\cfrac{11}{2}-\cfrac{1}{4}y\implies x=\cfrac{11}{2}-\cfrac{1}{4}\cdot \cfrac{38}{9}\implies x=\cfrac{11}{2}-\cfrac{19}{18} \n\n\n x=\cfrac{99-19}{18}\implies x=\cfrac{80}{18}\implies \boxed{x=\cfrac{40}{9}}$

a soccer goal is in the shape of a triangular prism. the base and height of the right triangles at the sides of the goal measure 4 feet and 8 feet and the opening along the front is 24 feet long. how many cubic feet of space is 24 feet long. how many cubic feet of space is contained within this goal?

Answers

The volume of a triangular prism with a known base and height is the same as half the volume of a rectangular prism with the same base and height (since a right triangle is simply a rectangle sliced diagonally).

So, we will first solve this as if it were a rectangular prism, finding volume accordingly.

4 * 8 = 32

32 * 24 = 768

Now, we know what the volume of a rectangular prism of those dimensions would be, so all we have to do is divide by 2 to find the volume of the triangular prism that is the soccer goal.

768 / 2 = 384

The volume of the soccer goal is 384 cubic feet.
Hope that helped! =)

there are a total of 127 cars and trucks on a lot. If there are four more than twice the number of trucks than cars , how many cars and trucks are on the lot ?

Answers

c + t = 127 ;
t = 2c + 4;
then, c + 2c + 4 = 127;
3c = 123;
c = 123 / 3 ;
c = 41 ( cars )
t = 2 * 41 + 4 = 88 ( trucks ).

Simplify the square root of 125

Answers

The value of the expression √125 will be 5√5.

We can first represent 125 as the product of its prime components in order to simplify the square root of that number. 5 x 5 x 5 is the prime factorization of 125. The quantity that, when multiplied by itself, equals 125 is known as the square root of 125. We may claim that the square root of 125 is 5√5, as 5 x 5 = 25, and 25 x 5 = 125.

Using the principle that the square root of a perfect square is the number itself, we may further reduce the square root of 125. Since 25 is a perfect square in this instance, its square root is just 5. Therefore, 5 √5 may also be used to represent the square root of 125.

More about the Algebra link is given below.

brainly.com/question/953809

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Hello,

as 125=5^3
√125=5√5

Why is the interest rate of a loan one of the most important things to consider when shopping around for loans?a.
The interest rate should be ignored, because there’s nothing a consumer can do to change it.
b.
The interest rate is essentially how long you have to pay off your loan, and the shorter the better.
c.
The interest rate can drastically change the total amount paid to the lender, in the case of mortgages, up to thousands of dollars.
d.
The interest rate does not change, even between banks, so choosing the right time to borrow is essential.

Answers

Answer:

The correct answer is c. The interest rate can drastically change the total amount paid to the lender, in the case of mortgages, up to thousands of dollars.

Step-by-step explanation:

The formula of interest is A=P (1+r)ⁿ

A=Final amount

P= Principal ( deposit)

r= interest rate

n= time

As we can see, interest rate will be added to the final amount. If the interest rate is higher , higher will be the amount. So, it is an important issue when you are evaluating a loan.

i think c because it is right i think

Solve for x in the following equation: ax+5x-4=10

Answers

Factor in "x" the expression:

$ax+5x-4=10\n \n (a+5)x-4=10\n \n (a+5)x=10+4\n \n (a+5)x=14\n \n \boxed{x=(14)/(a+5)}$

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What is the remainder of 1,467 divided by 58

I need help with this question please help!! will give you brainliest and points

-16t squared + 16t + 480 t=time after jumping in seconds h=height in feet How many seconds did did it take her to hit the water