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bearhunter [10]
3 years ago
13

A city council member wanted to know how her constituents felt about a planned resining she randomly selected 75 names from the

city phone directory and conducted a phone survey
Mathematics
1 answer:
Arturiano [62]3 years ago
4 0

Answer:

Step-by-step explanation:

Hello!

A city council member wanted to know how her constituents felt about a planned rezoning. She randomly selected 75 names from the city phone directory and conducted a phone survey.

Identify the population and sample in this setting.

The population of interest is confirmed by all the individuals or experimental units that the researcher wants to study. The sample is normally a portion of the population randomly selected and representative of it. Since in most cases it is impossible to study the whole population the sample is taken. Then after the experiment is conducted, the conclusions reached are extrapolated to the whole population.

Normally is easier to identify the sample first and then the population, in this example, the sample is "75 names from the city phone directory" then the population will be "people registered in the city phone directory"

The correct option is the first one.

> The population is everyone listed in the city phone directory; the sample is the 75 people selected. CORRECT

> The population is residents of the city; the sample is the registered voters in the city. INCORRECT

> The population is registered voters in the city; the sample is everyone listed in the city phone directory. INCORRECT

I hope this helps!

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Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
lana [24]

Answer:

\angle6=123

Step-by-step explanation:

Given

Lines x and y

Transversal b

\angle 1 = 57

Required

Find \angle 6

From the attachment, \angle1 and \angle7 are vertically opposite.

This means that

\angle 1 =\angle 7 = 57

Similarly

\angle 7  and \angle 6 are supplementary angles

So:

\angle7 + \angle6=180

Make \angle6 the subject

\angle6=180-\angle7

\angle6=180-57

\angle6=123

The relationship between \angle1 and \angle6 is that they are supplementary angles because:

\angle6+ \angle1=180

4 0
3 years ago
At the Grassy Meadows Mennonite School, the total number of students in grade 7-9 is the lowest commom multiple of the numbers o
kobusy [5.1K]

Answer:

Seven  

Step-by-step explanation:

Let G7, G8, and G9 be the numbers of students in the respective grades.

Then, G7 + G8 + G9 = LCM of G8 and G9

<em>Data: </em>

G8 = 5

G9 = 3

<em>Calculations: </em>

<em>Multiples of 5</em>: 1 2          10 15

<em>Multiples of 3</em>: 1   3 6 9       15

The <em>LCM</em> of 5 and 3 is 15.

G7 + 5 + 3 = 15     Combine like terms

     G7 + 8 = 15     Subtract 8 from each side

           G7 = 7

There are seven students in Grade 7.


4 0
3 years ago
What is the surface area of this rectangular prism? Rectangular prism with length labeled 11 feet, height labeled 2 feet, and wi
mart [117]
Answer =200ft
L = 11ft
w = 6
h = 2

3 0
2 years ago
Find volume with full working out pls asap
ZanzabumX [31]

Answer:

868 m³

Step-by-step explanation:

Volume = Difference of cones

V = ⅓(pi×r²h)

Volume of cone with base Circle O:

h = 8.2+8.2 = 16.4 m

V1 = ⅓(pi×7.6²×16.4)

V1 = 991.97

Volume of cone with base Circle A:

V2 = ⅓(pi×3.8²× 8.2)

V2 = 124 m³

Volume = V1 - V2

991.97 - 124 = 868 m³

6 0
3 years ago
A person bikes 2 1/2 miles at a constant rate in 1/8 of an hour. What distance, in miles,does the person bike in an hour?
Bad White [126]

Answer:

The person bikes 20 miles in an hour.

5 0
2 years ago
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