A researcher posts a radio advertisement offering $35 in exchange for participation in a short study. The researcher accepts the first eight people who respond to the advertisement. Which of the following statements is true about the sample? (5 points) a It is a valid sample because the first eight people were selected to participate. b It is not a valid sample because it is not a random sample of the population. c It is a valid sample because money was offered to participants. d It is not a valid sample because it is only a short study.

Answers

Answer 1
b) not valid because it is not a random sample

a) is biased because the first 8 people are unlikely to be representative of the population
c) is biased as offering money will influence the people who reply
d) is untrue because short studies are valid if they are representative

Related Questions

There are six bottles and five cans on a table. Three bottles have water in them and one can has water in it. What is the probability of randomly selecting a container with no water?

64%

81%

76%

100%

Answers

Answer:

64%

Step-by-step explanation:

There are 11 containers in total, in which 4 are filled. 11-4=7.

7×100=700÷11=63.6363...

rounded=64

Can someone give me the answer this question

Answers

Answer:

x = 16

Step-by-step explanation:

We know that the 2 given angles are same side interior angles, and therefore are supplementary (add up to 180°). The equation to solve for "x" would be written as:

(Angle 1) + (Angle 2) = 180°

(8x - 10) + (62) = 180°

8x + 52 = 180

8x = 180 - 52

8x = 128

x = 16

Therefore, x = 16

Hope this helps!

Please someone help with this cone volume please

Answers

Answer:

the answer is

235.62m^3.

don’t understand how to do this

Answers

Answer:

C

Step-by-step explanation:

I don’t either hahahqhqhahahahahqhqhqhqhqh

Condense the following logarithm:
[tex]5 log_{4}(a) - 6 log_{4}(b) [/tex]

Answers

log 4 ( a^5 ) - log 4 ( b^6 ) =

log 4 ( a^5 / b^6 )

Do Now-Find the size of a flat-screen tv given the length and
width, using the PT. Show ALL WORK for FULL Credit:
20in
25 in

Answers

500 area
90 perimeter
"Size" is ambiguous, so I'm giving you two answers.

When you hear that a TV is 40 inches, the length from one corner to the opposite corner diagonally is 40 inches. To solve, we use formula for hypotenuse, a^2 + b^2 = c^2.

20^2 + 25^2 = 32.02^2.

If that is what they mean by size, your answer is 32.02. However, size could refer to the area of the screen, which is calculated by length * width.

20 * 25 = 500

The answer in this case is 500.

please help me out with this equation!
i will mark you as brainliest

Answers

Answer: Choice B

vertex = (3, -4)y intercept = (0, 5)x intercepts = (1, 0) and (5, 0)axis of symmetry:  x = 3

========================================================

Explanation:

The vertex is the lowest point for parabolas that open upward like this. The lowest point is (3, -4). If the parabola is flipped upside down, then the vertex would be the highest point.

--------

The y intercept is where the graph crosses the y axis. For any function, it will have at most one y intercept (some don't have any at all but the most you can have is 1 y intercept). The graph crosses the vertical y axis at (0,5). We can say in short "the y intercept is 5". The y intercept always occurs when x = 0.

--------

On the flip side, the x intercept always occurs when y = 0. This is where the graph crosses or touches the x axis. We have two such locations of (1,0) and (5,0). In short, we could say "the x intercepts are 1 and 5". The term "root" is another word we could use in place for "x intercept". Unlike the y intercept, we can have as many x intercepts as we want.

--------

The axis of symmetry is the vertical line through the parabola. It is the x coordinate of the vertex. So it's not a coincidence that the vertex is at (3,-4) and the axis of symmetry is x = 3, with those '3's repeated twice.

Find the period of the function y= 2/3 cos(4/7^x) + 2

Answers

T = 2 π / | 4/7 |

T = 2 π / 4/7

T = 2 π × 7 / 4

T = 7 π / 2

Thus the correct answer is option A .

Answer:

The option is A

Step-by-step explanation:

T = 2 π / | 4/7 |

T = 2 π / 4/7

T = 2 π × 7 / 4

T = 7 π / 2

Hope this answer helps you :)

Have a great day

Mark brainliest

hey i’ll give brainliest please help

Answers

The answer it A! ——————

Answer:

Fossil fuel resources are plentiful in areas that had certain types of ecosystems millions of years ago.

Step-by-step explanation:

Answer Choice 1. Incorrect. Minerals can be found all over the world in the crust of the earth, but generally in such small quantities that they are not worth extracting.

Answer Choice 2. Correct. Fossil fuels can be found more in areas that had a lot of plant growth because, after a long time, the heat and pressure changed the plants into fossil fuels.

Answer Choice 3. Incorrect. Minerals, fresh water, and biosphere resources are distributed unevenly around the planet as a result of past geologic processes.

Answer Choice 4. Incorrect. It depends more on the geological processes to produce large mineral deposits compared to the location of where they are.

Which expression is equivalent to 5(a + b) ?

A. 5a + 5b
B. a + 5b
C. 5a + b
D. a(5 + b)

Answers

Answer:

A is the answer

Step-by-step explanation:

5 multiplys by a to get 5a and 5 muliplys by b to get 5b

because a is equal to 1 and b is equal to 1

it applies to any letter

so 5*a= 5a

and 5*b=5b

so it turns into 5a+5b  

plz mark brainly and hope it helped u

A. is the answer

Step-by-step explanation:

5 multiplys by a to get 5a and 5 muliplys by b to get 5b

because a is equal to 1 and b is equal to 1

it applies to any letter

so 5*a= 5a

and 5*b=5b

so it turns into 5a+5b  

plz mark brainly and hope it helped u

2,668 ÷ 53 (Im putting this because it has to be 20 characters or more)

Answers

Answer:

50.33962264

Step-by-step explanation:

brainlest pls

Answer:

the answer is 50.33

Step-by-step explanation:

someone check out my recent question

in the equation '3x-3=9, transposing -3RHS,we get 3x=9​

Answers

[tex]\sf\purple{The\:value\:of\:x\:is\:4.}[/tex] ✅

Step-by-step explanation:-

[tex]3x - 3 = 9 \\ ➡ \: 3x = 9 + 3 \\ ➡ \: x = \frac{12}{3} \\ ➡ \: x = 4[/tex]

To verify:-

[tex]3 \times 4 - 3 = 9 \\ ➵ \: 12 - 3 = 9 \\ ➵ \: 9 = 9 \\ ➵ \: L.H.S.=R. H. S[/tex]

Hence verified.

[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]

What is the range for 42 42 52 53 58 58 61

Answers

Answer:

range would be 19

Step-by-step explanation:

Answer:

I have to say -282

Step-by-step explanation:

The range is the difference between the smallest and highest numbers in a list or set. To find the range, first put all the numbers in order. Then subtract (take away) the lowest number from the highest. The answer gives you the range of the list.

Suppose someone spent the following amounts over several months, $640, $710, $700 and $685. What would be their average monthly expenditure? (Show Your Work)

Answers

Answer:

help help help help jelp

Answer:

Step-by-step explanation:

First,

$640+$710+$700+$685=$2735.(total expenditure).

$2735÷4=$683.75.TOTAL AVERAGE.

A counter top is in the shape of a trapezoid. The lengths of the bases are 70 1/2 and 65 1/2 inches long. The area of the counter top is 1,244 square inches. Write and solve an equation to find the height

Answers

Answer:

height = (area x 2) / sum of bases

18.29 inches

Step-by-step explanation:

height = area x 2 / sum of bases

sum of lengths = 70 1/2 = 65 1/2 = 136

(1244 X 2) / 136 = 18.29

Pls help me I don’t understand these

Answers

Answer:

read it slowly then try again. but draw a division problem with dots

Solve the following equation: x3 -5x² + 4x = 0

Answers

Answer:

0,1 and 4

Step-by-step explanation:

i think you meant x^3

I shall assume the first one is x3^ ya! if you’re unsure feel free to clarify!!

A cafe has a lunch menu with 4 sandwiches, 3 drinks, and 2 desserts. If you had to choose 1 sandwich, 1 drink, and 1 dessert, how many outcomes are possible?
A. 9
b. 24
c. 27
d. 33

Can someone pls answer my question ? I need an your answer and your explanation.

Answers

Answer:

b. 24

Step-by-step explanation:

by multiplication rule ( probability theory) :

4×3×2 = 24

No of outcomes

Product of elements4(3)(2)(1)4!24

Option B

Why did the robber take a bath

Answers

Answer:

To make a "clean getaway"

Step-by-step explanation:

haha, nice one :D

which of the p-values satisfy the following inequality?

5≥2p+1

choose all answers that apply:

A p=0

B p=1

C p=2

Answers

Answer:

All of the answers

Step-by-step explanation:

P=0, p=1, p=2

I need the answer immediately!!!!!!!!

Answers

Answer:y=-5x-2

Step-by-step explanation:

This will have a negative slope since the line goes from left to right. Use rise over run to find the slope of -5 and look at the y axis where it intersects to get -2

Have a great day!

Three candidates were running for class president. Of the 250 students eligible to vote, 75 voted for Carlos and 32% of the students voted for LaToya. Of thsoe who didn't vote for Carlos or LaToya, 60% voted for Stephanie and the rest of the students chose not to vote.

Part 1: What percent of the eligible students voted for Carlos?

Part 2: How many votes did LaToya receive?

Part 3: How many votes did Stepanie recieve?

Part 4: Who won the election?

Answers

Answer:

Part 1) 30%

Part 2) 80 students

Part 3) 57 votes

Part 4) LaToya

Step-by-step explanation:

75 divided by 250 = 0.30 = 30%

32% = 0.32 and then 0.32 times 250 = 80 students

250 - 75 - 80 = 95 students that didn't vote for Carlos or LaToya. Then 0.60 times 95 = 57

LaToya had 80 votes, the most votes.

The answer is correct above me

I need help please help me !!!!

Answers

It is a function because the input does not repeat itself.

PLS HELP! WILL MARK BRAINLIEST!

(also please add explanation if possible)

Mr. Smith makes a pasta sauce
He mixes tomato concentrate: olive oil at a ratio of 3: 1

How many liters of tomato concentrate does he need to mix if he adds 3 liters of olive
oil?

Answers

Answer:

9 litres.

Step-by-step explanation:

3 * 3 = 9

9 liters
3:1
x:3
So x is 9

plz solve below one question.is will mark the one brain list answer.​

Answers

Answer:

tan023

Step-by-step explanation:

mark me brainliest

(35+4​n)−​(15+3​n)

pls answer asap

Answers

Answer:

20 - n

Step-by-step explanation:

Subtract like-terms:

35 + 4n - 15 - 3n = 20 - n

A sprinkler sprays water a distance of 10.2 m in a circular pattern How much area does the sprinkler cover in one complete rotation? Use 3.14 for n and round to the nearest tenth.​

Answers

Answer:

64.1

Step-by-step explanation:

2 time 3.14 times 10.2

64.056

64.1

A man leaves home at 20:15 hrs and
reaches his destination at 06:00 hrs the
following day. How many hours did the
journey take?

Answers

Answer:

9 hours and 45 mins

Step-by-step explanation:

First, this is in army time. (Just so you know!) Also, it goes to 24 hours.

What you would do is add 45 mins to get to a single hour: so 20:15 + 45 = 21:00, then add 3 to get to 24:00 or 12:00 am, then add 6 more hours to get to 6:00 hours. So the final answer is 9 hours and 45 mins

If the arc measure is 90 degrees and the diameter of the Circle is 10. what is the arc length?

Answers

Answer:

15.7 degrees.

Step-by-step explanation:

Harold found a job through a friend that works in HR for a large company. The job pays a yearly salary of $39K. What is the weekly salary based on this annual salary?

Answers

Answer:

Weekly salary of Harold = $750 (Approx.)

Step-by-step explanation:

Given:

Annual salary of Harold = $39K = $39,000

Find:

Weekly salary of Harold

Computation:

Number of weeks in a year = 365 / 7

Number of weeks in a year = 52.1425

Number of weeks in a year = 52 week (Approx.)

Weekly salary of Harold = Annual salary of Harold / Number of weeks in a year

Weekly salary of Harold = 39,000 / 52

Weekly salary of Harold = 750

Weekly salary of Harold = $750 (Approx.)

Other Questions
An income is measured asA all money received, including gifts, in the course of a year.B an amount spent in one weeks time.C an amount received in a specific period: weekly, biweekly, or yearly.D all money saved during a years time. Kramer Inc. has a materials price standard of $2.00 per pound. Six thousand pounds of materials were purchased at $2.20 a pound. The actual quantity of materials used was 6,000 pounds, although the standard quantity allowed for the output was 5,400 pounds. Kramer Inc.'s total materials variance is Group of answer choices kitna dokha deoge mojsemuje ae nhi pata tha ki is bar bhi doka, chordo mujse kabi mere sath bat mat karna muje pata ha ki to sab dekh rahaho What is half-life?Dhdhdhdhdhdhdhdhdhdhdhhdhdhdhddhdhdhdhhddhhdhddh QR=15;PR=28;PQ=15,Cos_=15/28 A frame which is used for ecological sampling Question 7 of 12This list describes the main causes of increasing violence between AmericanIndians and the U.S. government in the mid-1800s. Which phrase bestcompletes the list?Causes of Increasing ViolenceConflicts with white settlers over landThe Homestead ActAmerican Indians being forced onto reservationsO A. American Indian tribes no longer being recognized as independentnationsO B. Warfare between American Indian tribesO C. New laws protecting American Indjan lands from being occupiedby white settlersO D. New slave states being added to the countryPREVIOUS The area of a rectangle is 130 mm. The length is 3 mm greater than its width. Let x represent the width of the rectangle.Which equation can be used to solve for x?O A. 3x = 130O B. x2 + 3 = 130C. x(x + 3) = 130D. (x+3)2 = 130 Please help with this problem The poem says a lot about the theme of time passing and looks fading. The woman in the poem regrets the loss of youth and beauty. What is your definition of beauty? Is it a physical feature? Is there such a thing as inner beauty? What kind of beauty might that be? Write your answer in two hundred words. question in image attached What is an implicit message in this transcript from a news radio program?Lee Wu: Welcome back to News Time. I'm your host Lee Wu, and withme today is reporter Anna Andrews. Welcome, AnnaAnna Andrews: Thank you, Lee. It's good to be here.Lee Wu: You've been following the debate over the Port Hartpr Bridge.Can you tell us more about it?Anna Andrews: Yes, Lee. Residents in the town of Port Harbor aredivided over whether they should preserve the Port Harbor Bridge.Supporters of preserving the bridge say that it should be labeled ahistorical landmark, as it is the first suspension bridge built in thestate. To protect the bridge, they've proposed that it become part ofPort Harbor State Park. Opponents argue that preserving the bridgewill be too expensive and that it may become a safety hazard in thePREVIOUS How many moles are in 3.01 x 10^23 atoms of zinc? Out of $132,624, how much money will be remaining with the company after purchasing 1184 hard drives for $112 each? The anti-lock braking system is a desired feature that can provide automobiles a significant competitive edge. However, it is not used uniformly by every automobile company. Thus, this technology is best grouped under ________ technologies. plss help me :( Find the length of the arc. QUICK HELP!?Where do you think all the rain that falls goes ? Be detailed and specific The number of apple slices placed in 5 different pies is listed below. 94, 90, 82, 94, 85 What is the difference between the mean and the mode of these numbers? How was Justinian similar to some of the Roman emperors of the past? How was his rule both similar and different from the struggles emperors faced in old Rome? Mr. Halsey leans a ladder against an 11.5-foot wall. The bottom of the ladder is 3.5 feet from the base of the wall, as shown.What is the approximate length of the ladder?A.8 feetB.11 feetC.12 feetD.14 feet