A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement. Which of the following statements is true about the sample?

A.
It is not a valid sample because it is only a short study.
B.
It is a valid sample because money was offered to participants.
C.
It is a valid sample because the first five people were selected to participate.
D.
It is not a valid sample because it is not a random sample of the population.

Answers

Answer 1
The answer is C because it is unbiased because it was the first 5 people

Related Questions

ill give brainly amd 10 points

Answers

Answer: 50

Step-by-step explanation:

The answer is 50…………….

please help me guys.......

Answers

Answer:

9

Step-by-step explanation:

9+9= 18

Pretty sure its +9 cuz if you add 9 to all of the in put they come out as the out put

ANSWER THIS PLEASE-DUE TOMORROW!!!!

Answers

Answer: 6 more games

Step-by-step explanation:

Let’s review what we know:

The red team’s probability of winning is 70% (0.7).The blue team’s probability of winning is 65% (0.65).There are a total of 120 games.


To find the amount of games each team will statistically win, we multiply the percentage by the number of games.


Red Team: 0.7 x 120 = 84 games.

Blue Team: 0.65 x 120 = 78 games.


84 - 78 = 6 games.
Therefore, the red team will statically win 6 more games than the blue team.


A weather forecast states that there is a 20% probability of rain on each of the next 3 days.


Complete the description of a simulation you could perform using random numbers to find the experimental probability that it will not rain on any of the next 3 days.



To simulate a 20% probability of rain over 3 days, let
of 10 numbers represent a day with rain. So,
of the numbers represent a day without rain. Then, perform multiple trials, generating
random numbers for each trial.

Answers



answer: The experimental probability that it will not rain on any pf the next 3 day is 64/125


The probability of raining is 20%
Hence, the probability that there will be no rain, is (100-20) = 80%
The probabilty that there is no rain on the first day is 80/100 = 4/5


Hence, the required probaility is (4/5)3 = 64/125

Can someone explain and answer this question?
( brainliest )

Answers

Answer:

40/12 & 3 1/3

Step-by-step explanation:

honestly i can't give a good explanation, if the answer is not right, please someone comment, and i'll fix it.

Answer:

he is right i did this one

Step-by-step explanation:

Pls answer correctly! Thank you : )

Answers

I don’t see the question
I don’t see the question???

A refreshment stand makes 3 large servings of frozen yogurt from 4 pints. Graph the line and then write its equation. Let the x−axis represent the number of pints and the y−axis represent the number of servings. Use only fractional form, if necessary.

Answers

Answer:

......

Step-by-step explanation:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Answer:

Happy

Step-by-step explanation:

Your Answer

19. A pet shop owner bought 320 leashes. 30% of these leashes were pink leashes and the rest were blue and green leashes. The number of blue leashes is 3 times the number of green leashes. How many blue leashes did she buy?

Answers

The number of the blue leashes will be 240.

What are linear equations?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

It is given that:-

A pet shop owner bought 320 leashes. 30% of these leashes were pink leashes and the rest were blue and green leashes.The number of blue leashes is 3 times the number of green leashes.

The number of the blue leashes will be calculated as:-

L     =    320

B   +    P   +   g   =   320

{ (320  x   0.3 ) } + 0.7 ( B  +  g ) =  320

( 96 )  +   ( 2.8g )   =   320

2.8g   =   320 / 96

g   =   222  /  2.8  =  80

Now  B  =   3  x  g

B   =   3   x   80

B   =   240

Therefore the number of the blue leashes will be 240.

To know more about equations follow

https://brainly.com/question/2972832

#SPJ1

The line plot below shows the heights of players on a basketball team.

A line plot named


Which of the following statements are true? Select all that apply.


A.

There are 9 players on the team.


B.

76 inches is an outlier.


C.

More than half of the players are 79 inches or taller.


D.

3 more players are 84 inches tall than are 81 inches tall.


E.

The difference between the tallest and shortest player is 15 inches.

Answers

the difference between the tallest and shortest player is 15 inches

more than half of the players are 79 inches or taller

the best answer and explanation will get brainliest

Answers

Answer:

0

Step-by-step explanation:

0

SA=2.7066
Explanation: 2x(pi)3.14 x (the radius) 0.7979 squared + 2 x 3.14 x 0.7979 x 10= 2.7066

PLEASE HELP ASAP The table shows the results of a survey about eye color. Use the data in the table to estimate the likelihood that a person has each eye color. Which statement is true?

Answers

Answer: I think its The likelihood of having green eyes is 2%

Step-by-step explanation:

1/50 is 0.02 as a decimal

Answer:

C and D seem like both are correct.

Step-by-step explanation:

Not 100% sure! Cause likelihood of having brown eyes is 35% true. And the likelihood of having green eyes is 2% true.

sum1 help pleaseeeee <3

Answers

Answer:

  66°

Step-by-step explanation:

The applicable angle relations are ...

An exterior angle of a triangle is equal to the sum of the remote interior angles. Vertical angles are congruent.

__

We recognize that angle HIJ, marked 105°, is an exterior angle to triangle DIJ. We also recognize that the angle marked x° is a vertical angle to angle DJI in triangle DIJ. Angles JDI, marked 39°, and DJI are remote interior angles with respect to angle HIJ.

We can use the relations described above to say that ...

  ∠HIJ = 39° +∠DJI

  39° +x° = 105°

  x° = 66° . . . . . . . subtract 39°

The measure of angle x is 66°.

the answer would be 66 degrees

PLEASE HELP ASAPPP
Explain how to prove that an image is the dilation of a preimage in the coordinate plane.

Answers

Answer:

Look at the longest side of the original figure and then look at the longest side of the new figure.

Step-by-step explanation:

Say the dilation was by 1/2, if the longest side on the original figure is 6, the longest side on the new figure should be 3. Or if the dilation was 4, if the longest side of the original figure is 3, the longest side of the new figure should be 12. After doing that, check all of the other sides with the dilation in mind and check if it adds up.

For every degree, D, that the temperature increases, ice cream sales, S, increase by M dollars. Which expression models this relationship?

a) s = d * m
b) s = d + m
c) s * 2d = m
d) s = m = 2d

Answers

C. Because depending on the the temperature (D), it will affect the sales for the ice cream (S) which result in the profit being (M).

Answer:

the correct answer is a

Circle the correct option: A, B, C, or D.
2. A square is divided in half to form 2 triangles. Which of the following triangles are not formed?
A Right triangles
B Triangles with no obtuse angles
C Isosceles triangles
D Equilateral triangles

Answers

Answer:

C,D

Step-by-step explanation:

Help ASAP and answer correctly please!!!

Answers

Answer:

130 degrees

Step-by-step explanation:

7 and 2 are alike.

PLEASE HELP ME PLEASE I WILL GIVE BRAINLIEST

Answers

Answer:

19.98

Step-by-step explanation:

Answer:

19.98

Step by step:

(4.3 + 6.5) x 3.7
————————
2

A retail store mailed out 350 shipments. 14% of the shipments arrived late.

How many shipments arrived late?

Enter your answer in the box.

shipments

Answers

Answer:

49

Step-by-step explanation:

0.14x350 = 49

The answer is 49……………..

Find the radius of the circle with the given diameter.
1. 10 inches

Answers

Answer:

5 inches

Step-by-step explanation:

the diameter is just Rx2 (R being the radius)

and the radius is D divided by 2 (D is the diameter)

Find the diameter of the circle with the given radius.
6. 5 meters

Answers

Answer:

it is 10 meters

Step-by-step explanation:

it is 10 because the diameter is 2xR (R being the radius)

Define the following vocabulary words (make sure the definition is math related). ( if anyone is brave please come up i will draw you a pfp btw)

Answers

Answer:

I only know 1 because i dont relly now these

1= survey taking a shheet form

Step-by-step explanation:

After being exposed to an electromagnetic shrinking machine, Joe's height decreased by 120m over 4 seconds. His height decreased by the same amount each second.How much did Joe's height change each second?

-30m
20 m
-124 m
100 m

Answers

It is given that Joe was being exposed to an electromagnet shrinking machine. Because of this his height started decreasing .

Given,

The decrease was at a constant rate per second.

In 1.5sec, the height is decreased by 120cm.

So,

Variation per second =

Change in each second would be with negative sign indicate's decrease .

Hence, Answer is “-80” .

Hope it's helpful to you.

Please mark as Brainliest answer.

Please help me out with this I will give 50 points.

Answers

the answer is $32
how?: divide .75 from 24, getting 32. to check if it’s correct, multiply.25 and 32 which should get you 8, subtract 8 from 32 and you should get 24 as the end product
Anwser: 32
Step 1: Understand(24 = 75%)
Step 2: Divide(8 = 25%)
Step 3: Multiply(32 = 100%)
Step 4: Formulate(32)

ASAP!!!!!!!!!!

A student took 5 test in a quarter 3. His average was a 88. Four of his test scores were 87, 94, 86, and 100. What was his last test score? ( statistics) ( please write down or type it out! ) ty

Answers

Answer:

The last test score should be 73

Step-by-step explanation:

[tex]88 = \frac{( 87 + 94 + 86 + 100 + X )}{5}[/tex]  

Add all the values in the parentheses together to get:

[tex]88 = \frac{367 + X}{5}[/tex]

You want to remove the 5 next, so you multiply both sides by 5.

[tex]5 * 88 = \frac{367 + x}{5} *5[/tex]

[tex]88 * 5 = 440[/tex]

You should get:

[tex]440 = 367 + x[/tex]

The last step is to subtract both sides by 367:

[tex]440 - 367 = 73[/tex]

[tex]X = 73[/tex]

I hope this helps!

Answer: 73

Explanation: 87+94+86+100+73=440/5=88

Please help me with this I would give you 50 points.

Answers

Answer:

for the first sheet and the first one on #3 is 2

Yes the other person is correct for the first sheet and #3 the answer would be 2

BRAINLIEST, help please! Thanks

Answers

hey there!

1/2 = ?/8

=> if we observe , denominator is multiplied by 4

So we multiply numerator by 4 too

=> 1/2 x 4/4 = 4/8

? = 4


Hope it helps!

Mark as brainliest

1/2 = ?/8

2 multiplied by what number = 8?

2 x 4 = 8

---If we multiply the denominator by 4, we must also multiply the numerator by 4.

1 x 4 = 4

Answer: 1/2 = 4/8

? = 4

Hope this helps!

PROBABILITY!! PLS HELP!!

A) make a chart or other diagram to show all of the outcomes
B) Are the outcomes equally likely, if not, which ones are most likely and which ones are lest likely?
(images arnt perfect, pretend they are)

Answers

the outcomes are equally likely. in the first image, 1 2 3 and 4 all have a 25% chance of happening- while in the second image, both 1 and 2 have a 50% chance of happening

Help me out with this math problem for 50 points!!!

Answers

Answer:

1. -15 or negative 15

2. +30 dollars

3. - 6 yards

Step-by-step explanation:

Answer:

Not sure if this is correct, but I'd guess...
-15
+30
and -6?

Step-by-step explanation:

They all represent integers
15 feet below 0 is -15, and a deposit of 30 dollars would give you 30 because you're depositing to gain interest, as well as losing 6 yards in a football game would in turn -6 yards to your current total

ill give brainly
How long would it take to travel 870 miles at the rate of 58 miles per hour?




5 h

10 h

15 h

25 h

Answers

Answer:

15 h

Step-by-step explanation:

miles/miles per hour= hours taken to travel

870miles/58miles per hour= 15 hours

Answer:

C. 15 h

Step-by-step explanation:

Just divide 870 from 58. Really isnt that hard!

What are the values of x and y ?
x = °
Because..
y = °
I solved this by:

Please help

Answers

Answer:

x = 35° and y = 72.5

Step-by-step explanation:

The value of x = 35° {because they are vertically opposite angles )

Now, the the value of y

=> y + y + 35° = 180° { sum of angles on a straight line is 180° }

=> 2y + 35 = 180°

=> 2y = 180 - 35

=> 2y = 145

=> y = 145/2

=> y = 72.5

x is 35, because of the it’s the other ones vertex.
y is 72.5, because it’s a line and 180-35 is 145 and then divide it by 2 which is 72.5.
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