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inysia [295]
3 years ago
12

Identify the type of sampling used​ (random, systematic,​ convenience, stratified, or cluster​ sampling) in the situation descri

bed below. A man is selected by a marketing company to participate in a paid focus group. The company says that the man was selected because his name is among the first 200 in the phone number listings. Which type of sampling did the marketing company​ use?
A. Systematic sampling
B. Cluster sampling
C. Random sampling
D. Stratified sampling
E. Convenience sampling
Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

Answer: convenience sampling

Step-by-step explanation:

Convenience sampling is also referred to as opportunity sampling or accidental sampling and it occurs when a sample is selected from the population that is convenient and close to hand for the researcher. It's usually used during pilot testing.

Convenience sampling is such that the primary data source that are first available will be used for the research without any additional requirements being made.

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X+12/2x-5 - 3x-2/2x-5
BARSIC [14]

Answer:

the answer to this question is 3x-10

8 0
3 years ago
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What do a decimal number and a thumbtack have in common?
Maslowich
<span>They both have a point!

Hope I Helped You!!! :-)

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8 0
3 years ago
Solve using elimination x-2y=12 and 5x+3y=-44 <br> (4,8)<br> (-4,8)<br> (4,-8)<br> (-4,-8)
Leya [2.2K]

Answer:

(-4, -8)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

x - 2y = 12

5x + 3y = -44

<u>Step 2: Rewrite Systems</u>

x - 2y = 12

  1. [Multiplication Property of Equality] Multiply everything by -5:                  -5x + 10y = -60

<u>Step 3: Redefine Systems</u>

-5x + 10y = -60

5x + 3y = -44

<u>Step 4: Solve for </u><em><u>y</u></em>

<em>Elimination</em>

  1. Combine 2 equations:                                                                                   13y = -104
  2. [Division Property of Equality] Divide 13 on both sides:                              y = -8

<u>Step 5: Solve for </u><em><u>x</u></em>

  1. Define original equation:                                                                               x - 2y = 12
  2. Substitute in <em>y</em>:                                                                                                x - 2(-8) = 12
  3. Multiply:                                                                                                           x + 16 = 12
  4. [Subtraction Property of Equality] Subtract 16 on both sides:                      x = -4
6 0
3 years ago
The location of the mid point between (-15,4) (2,-10)
frozen [14]

Answer:

The answer is

<h2>( -  \frac{13}{2} , \:  - 3)</h2>

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

<h3>M  = ( \frac{x1 + x2}{2} , \:  \frac{y1 + y2}{2} )</h3>

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-15,4) (2,-10)

The midpoint is

<h3>M = ( \frac{ - 15 + 2}{2}  , \:  \frac{4 - 10}{2}  ) \\  = ( -  \frac{13}{2} , \:  -  \frac{6}{2} )</h3>

We have the final answer as

<h3>( -  \frac{13}{2} , \:  - 3)</h3>

Hope this helps you

5 0
2 years ago
How can the statement below be rewritten as a conditional statement in if-then form?
Irina-Kira [14]

Answer:

<h2>If two angles measures 180 degrees, then they form a linear pair.</h2>

Step-by-step explanation:

The conditional statement should be this way, because after the word ''if'', should be placed the condition, and after the word ''then'', should be the consequence.

5 0
3 years ago
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