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AfilCa [17]
4 years ago
12

Explain the difference between a simple random sample and a systematic sample.

Mathematics
1 answer:
Stells [14]4 years ago
5 0

Answer:

C

Step-by-step explanation:

Simple random sampling otherwise called probability sampling involves selecting a subset of a part of a population in which each member of the population has equal chances of being selected while systematic sampling involves the use of sampling interval which is determined by dividing the population by the sample size and a random starting point is selected. for example let say we have a population of 1000 people and we want to systematically select 50 people, 1000 /  50 = 20, it means after choosing a random starting point, we select every 20th person after the starting point until the desire sample size has been attained.

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Use Pythagorean theorem!!! Will give b !!
aliina [53]

Answer:

The last one

Step-by-step explanation:

Hey There!

The Pythagorean Theorem states that

the two legs squared added together equal the hypotenuse square

we are given the two legs so to find the missing side we square them, then add them together

1^2=1\\3^2=9\\9+1=10

the missing side length equals

\sqrt{10}

hope this helps!

4 0
3 years ago
Tara's car accelerated from 10 miles per hour to 70 miles per hour in 12 seconds.
SSSSS [86.1K]
Acceleration=change in velocity/time
a=(70-10)/12
a=60/12
a=5
So it is A

Hope this helps :)
8 0
3 years ago
Read 2 more answers
[11 + {- 18-9}]x2<br><br> I need help right now! please and thanks!
aalyn [17]

Answer:

−16x²

Step-by-step explanation:

Simplifying!

7 0
3 years ago
Read 2 more answers
−9x (5x+4 ) +10 (x+3) can someone please solve his for me thank u step by step please i really need to find out how to do it
Ivahew [28]

Answer:

-45x^{2}-26x+30

Step-by-step explanation:

So first you let's divide this equation into three parts.

Part one -9x(5x+4)

  1. Step one: you have to distribute the -9x to the numbers in the parentheses. That would leave us with a -9x*5x = -45x^{2} and -9x*4 = -36x
  2. Step two: Put the answers together. That would leave us with -45x^{2}-36x.

Part two 10(x+3)

  1. Step one: you have to distribute the 10 to the numbers in the parentheses. That would leave us with a 10*x = 10x and 10*3 = 30
  2. Step two: Put the answers together. That would leave us with 10x+30

Part three solve

  1. Step one: combine and put together what you have solved for. That would leave us with a -45x^{2}-36x+ 10x+30
  2. Step two: combine like terms. The like terms here are -36x and 10x. When you combine them you would get -26x.
  3. Step three: Write the equation in standard form. Therefore the answer is -45x^{2}-26x+30.

Let me know if anything is confusing!

5 0
3 years ago
If Sue rides 10 miles per hour on her bike, and this relationship is graphed, which ordered pair would not be on the graph?
-Dominant- [34]

Answer:

(8, 85) Would make this relationship not a function because every time you count up 1 it goes up 10 and 8 would match to 80 not 85 making 8, 85 the ordered pair would not be on the graph.


7 0
3 years ago
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