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laiz [17]
3 years ago
11

Dr. Lawrence is the director of Counseling Services at her university. She is planning to conduct a survey of 100 students at th

e university to see how aware they are of the counseling services that are offered at the university. She wants the proportion of first-time students and returning students in her sample to reflect the proportion in the university as a whole (15% first-time and 85% returning). Dr. Lawrence plans to stand in the Student Union and ask people to participate until she has given the survey to 15 first-time and 85 returning students. Which type of sampling method is Dr. Lawrence going to use
Mathematics
1 answer:
Tanzania [10]3 years ago
4 0

Answer:

The type of sampling method Dr. Lawrence going to use is Quota Sampling.

Step-by-step explanation:

In quota sampling participants are chosen nonrandomly so it is not a representative sampling method.  In this case Dr.Lawrence has a quota of 15% for first-time students and 85% for returning, so the survey she is conducting is non-random. The sampling method she should use is Quota Sampling.

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If a sphere has a radius of 2 cm what is the approximate surface area of the sphere
xenn [34]
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If your radius is 2, then filling in that formula looks like this:
SA=4 \pi ( 2^{2} ) or 16 \pi.  If you leave your answer in terms of pi, which is the exact answer, you're done.  But if you multiply pi in, your surface area is SA = 50.264 square cm.
7 0
3 years ago
A deck of cards contains 5 black cards numbered 5 to 9 and 5 red cards numbered 1 to 5. How many 6-card hands having 4 black car
tester [92]

Answer:

50

Step-by-step explanation:

4 black cards = 5C4 = 5

2 red cards = 5C2 = 10

5 x 10 = 50

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3 years ago
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Their you go good luck

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3 years ago
Find c to two decimal places and find the measure of angle B. Angle A = 58°, Side AC = 5, Side BC = 8, Find side C. Angle C is 9
KATRIN_1 [288]

Answer:

  • c = 9.43
  • m∠B = 32°

Step-by-step explanation:

Side c = AB can be found using the Pythagorean theorem:

  c² = a² + b² = 8² +5² = 89

  c = √89 ≈ 9.43

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Angle B is the complement of angle A, so is ...

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5 0
3 years ago
Treasury bills are paying a 4% rate of return. A risk-averse investor with a risk aversion of A = 1.85 should invest entirely in
kumpel [21]

Answer:

14.656%

Step-by-step explanation:

Data provided in the question:

Rate of return, r = 4% = 0.04

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Standard deviation, σ = 24%

Now,

we have the relation

A = (E - r) ÷ σ²

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on substituting the respective values, we get

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E = 0.14656 × 100% = 14.656%

8 0
3 years ago
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