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MAXImum [283]
3 years ago
10

Identify the sample as biased or unbiased and describe its type. John wanted to know about the popularity of a particular movie.

He surveyed 20% of the people in 5 different theaters.
Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer: unbiased; simple random sampling

Step-by-step explanation:

From the question, we are informed that John wanted to know about the popularity of a particular movie and that he surveyed 20% of the people in 5 different theaters.

This is an unbiased sample. This is because everybody at the theaters have an equal chance of being chosen by John.

Also, it's a simple random sampling. This is because a subset of the entire population is randomly selected.

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Please help, I don’t know how to do this. Use a compass and straightedge to construct a line perpendicular to the given through
Tasya [4]

Step-by-step explanation: B

put the center of the circle on the right of the line and the edge of the circle on the p. Make part of a circle. you dont have to do the whole circle, but you can if you want.

do the same thing again but on the other side of the line.

now it should look like the first image i included (if you didnt do the whole circle)

now take your straightedge/ruler/line maker and make it go through the intersecting points on the circles, like the second image.

Note that my images are for demonstration. They're not perfect at all, they're just to show you how to do it.

5 0
3 years ago
Which equation represents a circle whose center is located at (- 6, 2) and whose radius is sqrt(10) units?
azamat

Answer:

{(x  + 6)}^{2}  +  {(y - 2)}^{2}=10

Step-by-step explanation:

The equation of a circle with center (a,b) and radius r, is

{(x - a)}^{2}  +  {(y - b)}^{2}  =  {r}^{2}

From the question, the center of the circle is located at (-6,2) and the radius is

r =  \sqrt{10}

We substitute the center and radius to get:

{(x -  - 6)}^{2}  +  {(y - 2)}^{2}  =  {( \sqrt{10} })^{2}

Simplify to obtain:

{(x  + 6)}^{2}  +  {(y - 2)}^{2}=10

7 0
2 years ago
Which of the binomials below is a factor of this
Illusion [34]

Answer:

A

Step-by-step explanation:

Given

x² - 13x + 30

Consider the factors of the constant term (+ 30) which sum to give the coefficient of the x- term (- 13)

The factors are - 3 and - 10, since

- 3 × - 10 = + 30 and - 3 - 10 = - 13 , thus

x² - 13x + 30 = (x - 3)(x - 10) ← in factored form

Thus (x - 3) is a factor of the polynomial → A

7 0
3 years ago
Read 2 more answers
There are 3 cans that store 9 tennis balls. Consider the number of balls per can a.find the constant of proportionality for this
sergeinik [125]

Answer:

Write an equation that will model the proportional relationship given in each real world situation.

1. There are 3 cans that store 9 tennis balls. Consider the number of balls per can.

a. Find the constant of proportionality for this situation.

9 balls (B)

_________ = 3

3 cans (C)

b. Write an equation to represent the relationship.

b = 3c

5 0
2 years ago
What can be concluded if <1≈ <7?
sleet_krkn [62]

Answer:

B

Step-by-step explanation:

because the angles 1 and 7 are alternate and equal , we can conclude that p and q are parralel

4 0
2 years ago
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