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trasher [3.6K]
3 years ago
5

A small math department has 6 faculty members and 30 students. It can send 6 people to a national convention and they would like

to send 4 students and 2 faculty members. Of the 30 students, 4 are selected randomly, and then 2 faculty members are randomly selected from the six. This is an example of
(A) simple random sampling.
(B) stratified random sampling.
(C) voluntary response sampling.
(D) a census.
Mathematics
1 answer:
kramer3 years ago
8 0

Answer: (B) stratified random sampling.

Step-by-step explanation:

  • A stratified random sampling technique is a sampling technique in which  the researcher includes the participants from each group.
  • He divides the entire population into groups and then he randomly selects participant from that groups of known as strata .

Here, Math department can send 6 people to a national convention and they would like to send 4 students out of 30 and 2 faculty members out of 6.

The department is considering both groups or strata of Students and faculty members as well.

And they selected 4 students randomly out of 30, and then 2 faculty members are randomly selected from the six.

Therefore , This is an example of stratified random sampling.

Hence, the correct option is  (B) stratified random sampling.

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if an exterior angle of a regular polygon measures 15 degrees how many sides does it have ?a.23. b.24. c.25
dimaraw [331]

Answer:

B.24

Step-by-step explanation:

we know,

exterior angle  = 360°/n(where 'n' is number of sides)

then,

15° = 360°/n

n = 360°/15°

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3 0
3 years ago
Complete the table of ordered pairs for the linear y=2x-8
ExtremeBDS [4]

Given:

Consider the below figure attached with this question.

The linear equation is:

y=2x-8

To find:

The values to complete the table of ordered pairs for the given linear equation.

Solution:

We have,

y=2x-8

Substituting x=0 in the given equation, we get

y=2(0)-8

y=0-8

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So, the value for first blank is -8.

Substituting y=-2 in the given equation, we get

-2=2x-8

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So, the value for second blank is 3.

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So, the value for third blank is -4.

Therefore, the required complete table is:

     x           y

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2 years ago
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Alik [6]

Answer:

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Step-by-step explanation:

6 0
2 years ago
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jenyasd209 [6]

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Note: the word "than" switches the order of the terms.

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<u>÷3         </u>     <u>    ÷3 </u>

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