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Sever21 [200]
3 years ago
5

A college faculty consists of 400 men and 250 women. The college administration wants to draw a sample of 65 faculty members to

ask their opinion about a new parking fee. They draw a simple random sample of 40 men and another simple random sample of 25 women. What type of sample is this?
Mathematics
1 answer:
galina1969 [7]3 years ago
5 0

Answer:

The type of sample is Stratified sampling.

Step-by-step explanation:

Consider the provided information.

Types of sampling.

  • Random sampling is similar to placing the name of everyone in a hat and pulling out a few names.
  • In Systematic sampling, we list of elements is counted off.
  • Convenience sampling: data which is readily available is used. That is, the first people are running into by the surveyor.
  • In Cluster sampling, we divide the population into groups, usually geographically.
  • In Stratified sampling we divide population into groups called strata. but this time population might be separated into males and females.

Here the population is divided into groups of males and females therefore it is stratified sampling.

Hence, the type of sample is Stratified sampling.

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When you sample the first individuals you can find, you call it a _____; it's cheap and easy to do, but statistically not a very
ZanzabumX [31]

Answer:

E.

simple random sample

Step-by-step explanation:

Simple random sample: Every member and set of members has an equal chance of being included in the sample. Random samples are usually fairly representative since they don't favor certain members.

3 0
3 years ago
3 points
stich3 [128]

Step-by-step explanation:

2x + 100 = 90

x = -5

Angle A = 45 - 5 = 40.

6 0
2 years ago
Cual ecuacion representa un ejemplo de la
Katarina [22]

Answer:

B) 6(x+2y) + 4 = 6x + 12 y + 4

6 0
3 years ago
What is the area??????
Westkost [7]
Your answer would be 91.1 units².
We can split this shape into a trapezium and a semicircle, and then find the area of both and add them.
To find the area of a trapezium, the formula is
(a + b)/2 × h, which means we do 14 (the length of AD) + 8 (the length of BC) = 22, and 22/2 = 11. Then we multiply 11 by the height of the trapezium, which is 6 because 10 - 4 = 6. This gives us the area of the trapezium as 66 units².
To find the area of a semicircle, the formula is πr²/2, and the radius is 4 because the diameter is 8 (16 - 8 = 8). This means we do π4²/2 = 16π\2 = 8π = 25.13.
Then we need to add together 66 and 25.13, which equals 91.13, or 91.1 to the nearest tenth.
I hope this helps!
7 0
3 years ago
Read 2 more answers
The statement​ the sum of x and 7​% of x is at least 30​"
tigry1 [53]

Answer:

  x + 0.07x ≥ 30

Step-by-step explanation:

A sum is terms separated by a plus sign.

"Is at least" means "is greater than or equal to."

7% as a decimal fraction is 0.07.

"Of" means "times."

__

In consideration of the above, you have ...

  x  plus  7% of x  is at least  30

  x  +  0.07x  ≥  30 . . . . . using math symbols

5 0
3 years ago
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