Alex is conducting a survey for a car company. She decides to start by interviewing some people in her neighborhood. She prepares a questionnaire and emails it to 50 neighbors who own cars. Of those neighbors, 24 respond. Why is this sample likely to be biased?
A.
Alex sent a questionnaire by email instead of going door to door.
B.
Alex sent the questionnaire only to those who live near her.
C.
Not everyone who got the questionnaire responded.
D.
Those who got the questionnaire may not have responded on time.

Answers

Answer 1

Answer:

The answer is B

This is because if we know that Alex sent the questionnaire only to those who live near her, we can infer that this is biased.

Answer 2

Answer:

B: Alex sent the questionnaire only to those who live near her

Step-by-step explanation:

Related Questions

Based on the results shown in the table, how many white marbles would one expect to draw in a total of 50 draws? (hint:set up a proportion)

Answers

The answer to your question is 10

Can someone please help me???????????????????

Answers

Answer:

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation:

The equation is d=4t

The slope of this equation would be 4

Every new point on the graph is up 4, right 1

Sometimes, Cindy's little brother interrupts her during homework time. So, she made a triangular "Do Not Disturb" sign to hang on her bedroom door. The base of the sign is 1 1 2 feet long, and the sign is 2 2 3 feet tall. Which equation can you use to find the area of the sign, A?

Answers

Answer:

A = 1/2(b×h)

Step-by-step explanation:

Area = 1/2(base×height)

A scientist has collected the following data on the population of a bacteria colony over a thirty-minute period:

5 minutes: 78,000
10 minutes: 234,000
15 minutes: 657,000
20 minutes: 1,784,000
25 minutes: 5,040,000
30 minutes: 14,980,000

Which type of graph would be best to use to display the growth of the colony?
A.) a bar graph
B.) a circle graph
C.) a histogram
D.) a line graph

Answers

I think it’s D sorry if it’s wrong

pls help. i really need help right now

Answers

what? There is no photo

Can someone plz help me

Answers

Answer:

I would say 32 but I'm so sorry if it's wrong

32 I think! But I’m not sure! Have a good day!

please help me? :\ :/

Answers

No it can’t because a square is not a circle and their is no way for it to become a circle

PLS HELP

45°
.
9
V
Solve for x.
09
O 9V2
O 9V3
09
IN

Answers

Step-by-step explanation:

Let the remaining angle be z.

45+z=90

z=90-45

z=45

y=9(isoceles triangle)

Then,

By pythagoras theorem,

x=9root2

GIVING BRAINLIEST!!!!!

What type of triangle is shown in the image?

Acute triangle
Right triangle
Equilateral triangle
Obtuse triangle

Answers

Answer:

Well wheres the image?

Step-by-step explanation:

Answer:

Obtuse triangle

Step-by-step explanation:

Someone said so

Alejandra drove from Michigan to Colorado to visit her friend. The speed limit on the highway is 70 miles/hour. If Alejandra’s combined driving time for the trip was 14 hours, how many miles did Alejandra drive?

Answers

Answer:

Alexandra drove 980 miles

Step-by-step explanation:

70×14=980

PLEASE HELP IVE BEEN TRYING FOR HOURS!! - algebra 1

Answers

...................................

John had a puppy that weighed 12 pounds. Over a year, the puppy gained a significant amount of weight and is now 35 pounds. Use the variable x to represent the amount of weight the puppy gained.

Answers

Answer:x=35-12

Step-by-step explanation:x equals 23

Solve for the value of x in the following parallelograms.

Helppp, thanksss:)

Answers

1) combined total of the degrees should be 360. Opposite angles are congruent. So if one angle is 80 so is the one opposite it. 360-160=200
Then divide by two because u need to find x which is one angle. X is 100
2) opposite sides are congruent so you set them equal.
31=2x-5
-5 -5
26=2x
/2 /2
13=x
3) you set them equal because opposite angles are congruent
x+3=4x-27
-x -x
3=3x-27
+27 +27
30=3x
/3 /3
10 = x

An item that usually sells for $189 is on sale for 25% off. Find the sale price

Answers

Answer:

$141.75

Step-by-step explanation:

189*.75

1-.25 b/c 25 percent off

The sale price is $141.75

what is nine of the sum of three succesive odd

Answers

Answer:

3 of per succesive

Step-by-step explanation:

Joshua lives 8 miles directly south of the school. Mark lives 6 miles directly west of the school. What is the shortest distance between Mark's house and Joshua's house?

Answers

Answer:

10 miles

Step-by-step explanation:

Marlena has a cube with sides of 5 inches long that she wants to paint. How much paint will it take to cover the cube?
Determine whether this is surface area or volume(Don't need to solve solve, just want a complete sentence explaining your choice).

Answers

Answer: Volume because this is filling something in not covering something up.

Step-by-step explanation:

Jose reads his book at an average rate of 2.5 pages every four minutes. If Jose continues to read at exactly the same rate what method could be used to determine how long it would take him to read 20 pages?

Answers

Answer:

Step-by-step explanation:

help help help help help plsss
i need serious answer

DON'T WASTE MY PÓINTS~
DO NOT ANSWER IF YOU NOT KNOW~

Answers

Answer:

solution given:

CE=2×2=4[base side is double to the line of mid point]AB=15/2=7.5[b is a mid point]m<AEC=75°[ corresponding angle]

given:

BD=x+1

CE=x+10

we have

2BD=CE

2(x+1)=x+10

2x+2=x+10

2x-x=10-2

x=8

On parallelogram ABCD, if A(3,-4) B(10,-2) C(8,-9) and D(1,-11), what are the coordinates of E?

Answers

Answer:

(5.5 , - 6.5)

Step-by-step explanation:

Diagonals of a parallelogram bisect each other.

E (x , y) : midpoint of segment AC or segment BD

x = (3 + 8) / 2 = 11/2 = 5.5

y = (-4 + -9) /2 = -13/2 = - 6.5

Answer:

E(5.5,-6.5)

Step-by-step explanation:

We simply draw the parallelogram in coordinate system and read the coordinates of E.

(PLEASE HELP)
Which of these lengths CANNOT represent the sides of a triangle?

A.32,34,60
B.13,20,27
C.28,30,58
D.2,4,5

Answers

Answer:

2,4,5 doesn't form a triangle

Help plsss!
What are the zeros of f(x) = x2 - x - 20?
O A. x= -5 and x = 4
O B. x=-2 and x = 10
C. x= -10 and x= 2
O D. x = -4 and x = 5

Answers

Answer: D

Explanation: Factor -> f(x) =(x-5)(x+4)
Solve: x-5 = 0. x+4=0
X = 5, X=-4

CAN SOMEONE PLEASE HELP ME

Answers

Answer:

38 degrees

Step-by-step explanation:

this is an isosceles triangle, meaning that the base angles are congruent.

the total triangle is equal to 180

so the equation would be: x=180 - (71+71)

evaluate:

x=180-142

x=38 degrees

Hope this helps :)

The diagram below shows the radius of the circular opening of a drinking cup.

Which of the following is closest to the circumference of the opening in centimeters?

Answers

Answer:

25 cm

Step-by-step explanation:

[tex]C=2\pi r[/tex] where r is the radius of the circle

Plug in the given radius (4 cm)

[tex]C=2\pi (4)\\C=8\pi\\C=25[/tex]

Therefore, the circumference of the opening is approximately 25 cm.

I hope this helps!

Can someone help with question B please it's urgent

Answers

Answer:

| B | = - 9

Step-by-step explanation:

The determinant of a 2 by 2 matrix B = [tex]\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right][/tex] is

| B | = ad - bc

Then for

B = [tex]\left[\begin{array}{ccc}0&1\\9&8\\\end{array}\right][/tex]

| B | = (0 × 8 ) - (1 × 9 ) = 0 - 9 = - 9

Daniel has 54/3 CUPS of ice in the ice maker to use to make smoothies for his friends. He uses 2/3 of ice for each smoothie. How 3 cups many friends can have a smoothie?

Answers

Answer:

Step-by-step explanation:

i might be wrong if I'm wrong try 9 as the answer

Answer:

i think 9 i might be wrong

Step-by-step explanation:

Hellllllllllllllllllllppppppppppppppppppppppppp

Answers

Answer:

According to two brainly answer choices it should be Choice A.

15/6

Step-by-step explanation:

SOURCES:

https://brainly.com/question/16451231

https://brainly.com/question/16811984

THIS IS THE WORK OF ANOTHER BRAINLY USER NOT MINE

In this question, we are to get the total number of hours that Irina used in watching the movie which does not include the term used for airing the commercials.

Now to calculate this, let us first take a look at the shaded segmented bar. We can see that out of the 6 horizontal bars, 5 were shaded. What this means is that 5/6 of the hours went into airing the movie while 1/6 of the hour went into airing commercials

Now, mathematically the number of hours she viewed the movie without the commercials can be calculated by adding all these 5/6 hour in the 3 hours

Mathematically that would be 5/6 + 5/6 + 5/6 = 3 (5/6) or simply 3 * 5/6 = 5/2 = 15/6 hours

Four students ran for the position of school president. Use the following results to figure out who won. Jenna received 22% of the votes. Jordan received of the votes. Kelsey received 6 out of every 20 votes. Nathan received of the votes. The winner was A Jenna B Jordan C Kelsey D Nathan

Answers

Answer:

A Jenna

Step-by-step explanation:

Because if Jenna received 22% votes and Jordan, Kelsey, Nathan received less 20 percentage that means Jenna won for school president.

Please help! You will get 'Brainliest' if you do.

Answers

Answer:

10.5

Step-by-step explanation:

just divide 49 by 4 and 2/3 to get the rate of mpg

y> - 1/2 x + 3
What is the y-intercept
(x,y)
What is the slope
Will the line be solid or dorted

Answers

Answer:

0,3

Step-by-step explanation:

enter in a graphing calculator see where you hits 0

Answer:

the answer is 0,3

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