A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample? (5 points)

Group of answer choices

It is not a valid sample because it is only a short study.

It is a valid sample because money is offered to participants.

It is a valid sample because the first 10 people were selected to participate.

It is not a valid sample because it is not a random sample of the population.

Answers

Answer 1

Answer:

I think these two are right.

it is a valid sample because money is offered to participants.

it is a valid sample because the first 10 people were selected to participate.


Related Questions

Hey please hurry?

Here is the graph of a function showing the amount of money remaining on a subway fare card as a function of the number of rides taken.

3. What does point P tell you about the situation?

After taking
[ Select ]
answers: 7 or 27.50
[ Select ]
answers: rides or off the card
, there will be
[ Select ]
answers: $27.50 or 7
[ Select ]
answers: rides or remaining on the card

Answers

Answer:

The point P shows the number of rides you have left on the card as well as the amount of money on the card

Step-by-step explanation:

On the x-axis, it says number of rides and since points are usually in a format of (x,y), the 7 would show what the x-axis is trying to represent. This is also the same for the y-axis.

Pls I need help no links no fame awnsers

Answers

Answer:

what's the question?

Step-by-step explanation:

Answer:

Step-by-step explanation:

A) x<12

B)x≥12

C)x>12

D)x≤12

I will give brainliest to the correct answer. <3


Alita is 2 times as old as Jiro. Jiro is 4 years younger then Erik. Erik is 1/3 as old as Dawn. The sum of all their ages is 72.


1) What equation could you write to represent this situation?

2) What is the solution of your equation?

3) fill in the blanks:

Alita is __ years old

Jiro is __ years old

Erik is __ years old

Dawn is __ years old


thanks!! :)

Answers

Answer:

dudee 4 months ago you asked this question I feel bad.

Step-by-step explanation:

1) The Equation to represent the situation is

     x+ x/3 + x/3-4 + 2( x/3 - 4)= 72

2) Alita is 16 years old

Jiro is 8 years oldErik is 12  years oldDawn is 36 years old

What is Algebra?

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

let the age of Dawn be x.

then age of Erik = x/3

Now, Jiro is 4 years younger then Erik.

Jiro's age = x/3 - 4

and, Alita is 2 times as old as Jiro.

So, Alita's age be = 2( x/3 - 4)

As,  The sum of all their ages is 72.

x+ x/3 + x/3-4 + 2( x/3 - 4)= 72

x+ x/3 + x/3-4 + 2x/3 - 8 = 72

7x/3 - 12 = 72

7x/3 = 84

x = 36

Thus,

Alita is 16 years oldJiro is 8 years oldErik is 12  years oldDawn is 36 years old

Learn more about Algebra here:

https://brainly.com/question/24875240

#SPJ2

i dont get this pls help. No LINKS! PLEASE

Answers

I am truly sorry if I get this wrong, but I think it's C.

Answer:

The answer is D

Step-by-step explanation:

Because 12/4 is 3 which is a whole number, all of the other answers belong in either A or B.

What is the propibility of getting a pizza with plain crust

Answers

Answer:

50%

Step-by-step explanation:

As you can see there is only two options for crust, sesame crust, and plain crust. 100/2 = 50 so the probability of getting a plain crust pizza would be 50%

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

What unit should be placed on a volume answer? cubed or squared

Answers

Answer:

volume is cubed

area is squared

Step-by-step explanation:

The unit placed on a volume answer is cubed and area is squared

lol pls help (pls get it right and include explanation)

Answers

Answer:

0.18

Step-by-step explanation:

Think of the decimals in the probability column as percentage. So Micheal has a 30% chance of eating the next fry, Lidia would have a 10% chance, so on and so forth.

The percentage will always go up to 100%.

You're given the other people's percentages, but not Ronald.

So in order to find out the answer, add all of the people's numbers, and subtract by one.

Sorry if this isn't a clear explanation. :)

Answer:

i think it's A because of how the patern is

Step-by-step explanation:

can i get some help ( i accidently chose that answeri still dont know)

Answers

Answer is c

When you substitue the x vaules to all of them the one whioch answers all of them correctly is c

A! Since it’s an in and out table.

need help 8th grade math

Answers

the answer is the 3rd one

What is the fully factored form of the expression 81v2 - 36uv + 4u2?

a
(9v - 2u)^2
b
(81v - 4u)^2
c
(9v + 2u) (9v - 2u)
d
(81 v - 4u) (v - u)

Answers

The correct answer is A. (9v-2u)^2

Answer:

I agree with findingnic666 it is A. (9v-2u)²

Step-by-step explanation:

Liz earns $9.28 per hour at her part time job. She works 5.5 hours on Saturday. How much money does Liz earn?

Answers

Answer:

$51.04

Step-by-step explanation:

$9.28 x 5.5 = $51.04

You have $2 and earn $0.50 for each cup of orange juice you sell. Write an equation that represents the total amount A (in dollars) you have after selling j cups of orange juice.

Answers

Answer:

2A+j=3

Step-by-step explanation:

Answer:

A=2+(j x $0.50)

Step-by-step explanation:

help me please free cookies if you help ✋

Answers

Answer:

answer is 0.19in^3

Step-by-step explanation:

i would like the cookie now...

HELP pls ASAP


A storage unit that has a square base has a volume of 480 ft3. The height of the unit is 7.5 feet.




The area of the square base is

__feet2.

What is the length and width of the storage unit?


The length of the unit is

__ feet.

The width of the unit is

__ feet.

Answers

Answer:

volume=area of the square base×height

area of the square base=480/7.5

=64

length=width=√64=8feet

The area of the square base=64 feet²

length= 8 feet

width=8 feet

Answer:

Umm, here’s a photo. Lemme make it easier

2^a / 2^2 = 2^3 solve for a

Answers

Answer:

a= 5

Step-by-step explanation:

hope this helps!

A=5 I hope this helps

10² - 10¹ - 10⁰
pls answer lol

Answers

Answer:

89\

Step-by-step explanation:

10^2-10^1-10^0
Your answer is going to be 89

The area of the trapezoid shown is 120 square centimeters. Find the sum of the lengths of the two parallel sides.

Answers

Answer:

CORECT

ALSO here are some tips and materials you could use

Answer:

C

Step-by-step explanation:

Simplify the algebraic expression:

2(y + 5) + 3y - 4

Answers

Answer:

2y +10 +3y-4

5y+6

Step-by-step explanation:

Answer: 5y + 6

Step-by-step explanation:

1. Distribute:

=2(y+5)+3y-4

=2y+10+3y-4

2. Subtract

=2y+10+3y-4

=2y+6+3y

3. Combine Like Terms

=2y+6+3y

=5y+6

[WILL GIVE BRAINLY] What can you tell about the mean of each distribution?

Answers

Answer:

The average cost is 23.71 less at A new leash on life

Step-by-step explanation:

The mean is the average, so 101.13 is 23.71 less than 124.84

the mean is that average so take all the numbers and divide it by the amount of numbers

Help pls these are so hard i really need points!!!!!!!!!!!!! Answer all of them please

Answers

What is the question stating? Do they want you to factor? Or use a different method?
I have no idea about the Answers

Angel decides to exceed the walking challenge goal. Describe two ways you might adjust the equation or inequality in Part A to represent Angel’s decision to exceed the goal. Give an example and explain.

Answers

Answer:

Step-by-step explanation:

The original distance that Angel wanted to walk will be represented as A

Since we don't know the additional distance Angel walked it'll be represented as B

A= the amount of distance Angel wanted to walk

B= the amount of distance Angel wanted to walk past his/her challenge goal

C= the amount of distance Angel walked originally from to past her/his challenge goal

A+B=C

Example:

I decide to work for A hours today as a challenge. Within this time I'm working I decided to extend my goal another B hours.

Can someone help me pls with full explanation will mark Brainly and 15+ points (only number 5)

Answers

Answer:

[tex]d = \sqrt{ {22}^{2} - {18}^{2} } = \sqrt{484 - 324} = \sqrt{160} = 4 \sqrt{10} [/tex]

[tex]circle \: area = ({4 \sqrt{10} \div 2 })^{2} \times \pi = ( {2 \sqrt{10} })^{2} \times \pi =40\pi [/tex]

2x+3=4
3x+y=6
solve by graphing

Answers

Answer:

(0.5, 4.5)

Step-by-step explanation:

The easiest-to-graph form is the slope-intercept form. Convert all equations to that form

3x + y = 6

y = -3x + 6 (move 3x)

To graph this, get the y-intercept, just take the b value of the equation (6)

The slope is -3, which is also the coefficient of x. So each time you move 1 over in the x-axis, the y axis drops by 3.

2x + 3 = 4 (this is a vertical line)

2x = 1

x = 1/2

To graph this, just draw a vertical line where x is 1/2

After graphing both equations, the point where the 2 lines intersect is the solution.

Graphs by Desmos linked attatched

Answer:

(0.5, 4.5)

Step-by-step explanation:

Have a nice day!

hurry plssss!!! if u can’t see the pic don’t bother answering

Answers

Answer:

Distance Divided by time

Step-by-step explanation:

i think that pi is the asnwer because if you walk 20 miles a day then that means that y=54 and x=34

The annual median income for a dental assistant is $33,280. The annual median income for nursing aide is $25,460. How much more can a dental assistant expect to earn than a nursing aide over 40 years?

Answers

Answer:

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Step-by-step explanation:

help me
the last choice that i couldn't fit on the screenshot is
D) f(x) = -0.25x - 3

Answers

Answer:

B.

Step-by-step explanation:

help its due in 5 mins lol

Answers

Y= 26 & x=35 hope I did it on time!

pls helpp pls pls pls pls pls pls

Answers

i think it’s 40 not sure
Yup, I also got 40. I would still double check.

Which of the following values will result in a quotient that is less than 1 when it is divided by ? Select all that apply




A) 2 and 1/4



b) 1/2



c) 3/10



d) 5/9



e) 1 and 2/3



f) 1/5



g) 7/15

Answers

A and E because they’re talking about quotient as “2 and 1/4” and “1 and 2/3”. The “2/3” , “1/4” is a fraction.

Plz help will be marked BRAINLIEST

Answers

Answer:

Because x=4

Step-by-step explanation:

Darius wrote 8=2x because x=4.

Hope this helps!

Try To Start The Sentence With : Darius Wrote 8=2x Being As- So it can seem like you’re very smart but I’m not too good at sentences but yeah have a good day
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