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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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Elsa tries to solve the following equation, and determines there is no solution. Is she correct? Explain.
Vlad [161]
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4 years ago
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Show that the transformation T defined by<br>T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.<br>​
erastovalidia [21]

Let <em>u</em> = (1, 0) and <em>v</em> = (0, 1). Then

<em>T</em> (<em>u</em>) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

<em>T</em> (<em>v</em>) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=>   <em>T</em> (<em>u</em>) + <em>T</em> (<em>v</em>) = (-1, 9, 5)

but

<em>T</em> (<em>u</em> + <em>v</em>) = <em>T</em> (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

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4 0
3 years ago
What is equivalent to the equation to 1/4 (8 + 6z + 12) ?
Fed [463]
1/4 (8 + 6z + 12) 

------------------------------------------------------------
Combine like terms :
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1/4 (6z + 20)

------------------------------------------------------------
Apply distributive property :
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1/4(6z) + 1/4(20)
3/2z + 5

------------------------------------------------------------
Answer: 3/2z + 5
------------------------------------------------------------
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I need help in finding these diagrams. Geometry.
SashulF [63]
I hope this helps you



56+35+CB=180


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AE=117


AEC=180+56=236


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14 beacause your multiplying 7x2 wich is 14
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