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In-s [12.5K]
3 years ago
7

At a college there are 120 freshmen, 90 sophomores, 110 juniors, and 80 seniors. A school administrator selects a random sample

of 12 of the freshmen, a random sample of 9 of the sophomores, a random sample of 11 of the juniors, and a random sample of 8 of the seniors. She then interviews all the students selected. Identify the type of sampling used in this example.
Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

Stratified sampling

Step-by-step explanation:

The is a type of sampling in which the population of interest is divided into subpopulations and then each subpopulation is randomly sampled.

In this case study, instead of just doing a random sampling of all students, the research divided the population of all students into subpopulations which includes freshmen, sophomores, juniors and seniors and then she makes a random sampling of each of these subpopulations.

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Igoryamba
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What role does blood play before cellular respiration can occur?
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Answer:

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Step-by-step explanation:

5 0
3 years ago
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6 0
3 years ago
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Any help will do! Thank you!
leonid [27]

<u>Let's take this problem step-by-step:</u>

 

<u>First let's set up the equation for the cost for one week of renting the car</u>

  • agency charges $230 per week

              charge = 230

  • agency charges $0.25 per mile (<em>lets set the number of miles as 'x')</em>

<em>               </em>charge = 230 + 0.25x

<u>The total cost was 415</u>, <em>therefore:</em>

             415 =230 + 0.25x\\185 = 0.25x\\x = 740

Therefore, you traveled 740 miles

<u>Answer: 740 miles</u>

<u></u>

Hope that helps!

#LearnwithBrainly

3 0
2 years ago
I have 4 base ten blocks. Some are rods and some are units. Their value is less than 20. Who am I?
Ostrovityanka [42]

Answer:

4 base ten

Step-by-step explanation:

Rods and units as per data.

4 0
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