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taurus [48]
2 years ago
10

A market researcher obtains a list of all streets in a town. She randomly samples 10 street names from the list, and then admini

sters survey questions to every family living on those 10 streets. What type of sampling is this?
Mathematics
1 answer:
inessss [21]2 years ago
5 0

Answer: Simple random sampling

Step-by-step explanation:

Given: A market researcher obtains a list of all streets in a town. She randomly samples 10 street names from the list, and then administers survey questions to every family living on those 10 streets.

Since she randomly samples street names , therefore the type of sampling is simple random sampling.

  • A simple random sample is a sample that is a subset of the population the researcher surveyed selected in a way such that all the individuals in the population has an equal chance to be selected.

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Who c is the value of the expression [(10^4)(5^2)/10^3)(5^3)]^3 1 2 8 10
Olegator [25]

Answer:

8

10 divided by 5 is 2, and 2 cubed is 8

6 0
3 years ago
Can someone help please
Pepsi [2]

Answer:

A: 5

B: 6

C: 3x^2 - 2x

D: 8

E: 22

Step-by-step explanation:

A: (-1)^2 + 4 = 5

B: (-4)^2 +4 = 16

2 x (-3) -4 = -10,

16-10=6

C: 3(x^2 + 4) = 3x^2 + 12

3x^2 + 12 -2x -4, simplify

3x^2 - 2x

D: g(3) = 2*3 -4 = 2

f(2) = 2^2 +4 = 8

E:  f(3) = 3^2 + 4 = 13

g(13) = 2*13 - 4 = 22

6 0
3 years ago
it takes 40 minutes for 8 people to paint 4 walls. How many minutes does it take 10 people to paint 7 walls?
KIM [24]
First let's find the rate at which one person paint one wall. We know it takes 40 minutes for 8 people to paint 4 walls.

If we divide 40 minutes by 4 walls, we find that it takes 8 people 10 minutes to paint ONE wall. Next, we multiply 10 minutes per wall by 8 people to find how long it takes ONE person to paint ONE wall. Since it takes 8 people 10 minutes, reducing the number of people to one will increase the required time by a factor of 10. So it takes ONE person 80 minutes to paint ONE wall.

Now let's use this information to find out how long it takes 10 people to paint 7 walls. First, multiply 80 minutes by 7 since there are 7 times as much wall to paint. We now know that it takes 560 minutes for one person to paint 7 walls. Finally, divide 560 minutes by 10 people.

The answer is 56 minutes.
8 0
3 years ago
Please answer this correctly
My name is Ann [436]

Answer:

2/3

Step-by-step explanation:

Total sides = 6

Number 5 and all even numbers = 1+3

=> 4

P(5 or even ) = 4/6

=> 2/3

6 0
2 years ago
The total area of the United States is 3.79 million square miles, and Texas covers 0.27 million square miles. A meteor falls fro
g100num [7]

The probability that it strikes Texas given that it strikes the US will be "0.071".

Given that,

The total area of US,

  • P(U) = 3.79 million square miles

Area covered be Taxes,

  • P(T) = 0.27 million square miles

According to the Baye's theorem,

→ P(\frac{T}{U} ) = \frac{P(T)\times P(\frac{U}{T} )}{P(U)}

By substituting the values, we get

→ \frac{P(T)}{P(U)}  = \frac{0.27}{3.79}

→         =0.071

Thus the above answer is correct.

Learn more about probability here:

brainly.com/question/16426250

3 0
2 years ago
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