1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
umka21 [38]
3 years ago
15

Pollsters regularly conduct opinion polls to determine the popularity rating of the current president. Suppose a poll is to be c

onducted tomorrow in which 7,500 individuals will be asked whether the president is doing a good or bad job. The 7,500 individuals will be selected by​ random-digit telephone dialing and asked the question over the phone. Complete parts a through f.
a. What is the relevant population?
b. What is the variable of interest? Is it quantitative or qualitative?
c. What is the sample?
d. What is the inference of interest to the pollster?
e. What method of data collection is employed?
f. How likely is the sample to be representative?
Mathematics
1 answer:
Lisa [10]3 years ago
6 0

Answer:

a. The relevant population is all the citizens of the country

b. The variable of interest is about whether the president is doing a good job or bad job. It is qualitative

c. The sample data is the 7,500 citizens randomly selected by random-digit telephone dialing

d. The inference of interest to the pollster is whether the citizens think the president is doing good or bad

e. The method of data collection is survey.

Step-by-step explanation:

You might be interested in
Eight more than twice a number is fifty
krok68 [10]
2x + 8 = 50 

Subtract 8 from both sides

2x = 42

Divide both by 2 

x = 21
8 0
2 years ago
Read 2 more answers
Write an equation for a parabola in which the set of all points in the plane are equidistant from the focus and line. F(0, –5);
barxatty [35]
Well, "<span>the set of all points in the plane equidistant from the focus and a line", is referring to the focus point of the parabola and the directrix line.

bearing in mind that, both fellows are at a distance "p" from the vertex, that puts the vertex right in the middle of them.

notice, the focus point is below the directrix, meaning, is a vertical parabola, and is also opening downwards, like in the picture below.

from -5 to 5 over the y-axis, there are 10 units, so the "p" distance is 5, so that puts the vertex right at the origin.

since the parabola is opening downwards, "p" is negative, thus -5.

</span>\bf \textit{parabola vertex form with focus point distance}&#10;\\\\&#10;\begin{array}{llll}&#10;4p(x- h)=(y- k)^2&#10;\\\\&#10;\boxed{4p(y- k)=(x- h)^2}&#10;\end{array}&#10;\qquad &#10;\begin{array}{llll}&#10;vertex\ ( h, k)\\\\&#10; p=\textit{distance from vertex to }\\&#10;\qquad \textit{ focus or directrix}&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\begin{cases}&#10;h=0\\&#10;k=0\\&#10;p=-5&#10;\end{cases}\implies 4(-5)(y-0)=(x-0)^2&#10;\\\\\\&#10;-20y=x^2\implies y=-\cfrac{1}{20}x^2<span>
</span>

4 0
3 years ago
PLEASE HELP! THANK YOU!
yarga [219]

Answer:function b

Step-by-step explanation: x adds up by ten

5 0
3 years ago
Read 2 more answers
Shirts are on sale at a price of $50 for 4. How many shirts can be purchased for $125?
mezya [45]

Answer:

10 shirts

Step-by-step explanation:

We can use a ratio to solve

50 dollars           125 dollars

-------------------- = -------------------

4 shirts                   x shirts

Using cross products

50 *x = 4 * 125

50x = 500

Divide each side by 50

50x/50 = 500/50

x = 10

6 0
3 years ago
Read 2 more answers
A books thickness in 31 millimeters what is the thickness in centimeters
Natasha2012 [34]
\bf \begin{array}{ccllll}&#10;cm&mm\\&#10;\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\&#10;1&10\\&#10;x&31&#10;\end{array}\implies \cfrac{1}{x}=\cfrac{10}{31}

solve for "x"
6 0
2 years ago
Other questions:
  • What is 6 as a percent?
    15·1 answer
  • X- (input)<br> Y- (output)<br> oot<br> Is this mapping a function and how can you tell
    12·1 answer
  • Simplify the expression, then evaluate when x=5 and y=6. x(y+4)+3(2x+7y)
    13·1 answer
  • 50 points
    11·1 answer
  • Write an equation parallel to y=3x−1 y=3x−1 and goes through the point (-2, -13)
    6·1 answer
  • The present ages f Nick and David are in the ratio 5:7. After four years the ratio of their ages will be 3: 4 . find their prese
    10·1 answer
  • Need help asap!!!!!!!!!
    11·2 answers
  • At least two of its angles are right angles.
    13·2 answers
  • According to a poll, 30% of voters support a ballot initiative. Hans randomly surveys 5 voters. What is the probability that exa
    11·1 answer
  • Michelle bought five packs of crayons for $16.25 What is the cost of a pack of crayons, in dollars, if all the packs cost the sa
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!