Roshanda was curious if students in her class would complete a maze faster if fast-paced music was playing in the background. She randomly assigned each student in her class to one of three groups: fast-paced music, slow-paced music, or no music. She timed each student as they individually completed a maze with their corresponding music (or no music) in the background. Students who worked with the fast-paced music, on average, completed the maze significantly faster than students in the other groups.
Can we conclude that the fast-paced music caused her classmates to finish the maze faster? Why?

(A) Yes, because the study included each student in her class

(B) Yes, because the adults were randomly selected

(C) Yes, because the students were randomly assigned to treatment and control groups

(D) Not necessarily, because the sample size was too small

(E) Not necessarily, because this wasn't an experiment

Answers

Answer 1

Answer: (E) Not necessarily, because this wasn't an experiment

Step-by-step explanation:

As much as the results would suggest that the fast-paced music was responsible for the faster finishing time, this conclusion cannot be authoritatively made because this was not technically an experiment but rather a test to satisfy curiosity.

An experiment is planned and is scientific. It has more stringent requirements that ensure causation that Roshanda did not meet before she engaged in this trial so we cannot say for a fact that her findings are objective.

Answer 2

Answer: C. yes, the students were randomly assigned to treatment and control groups.

Step-by-step explanation:


Related Questions

A college conducted a survey of randomly selected freshmen about their choice of major. The table shows the results of the survey. Freshmen Majors Major Number of Freshmen English 50 Science 35 Engineering 40 Business 45 Education 60 Undecided 50 Other 20 Which inference about all freshmen at this college is best supported by this information?​

Answers

Answer: The number of freshman who chose education as their major is greater than the number of freshman who chose science or other as their major ANSWER- D

Step-by-step explanation:

Answer:

Step-by-step explanation:

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Answers

Answer:

k

Step-by-step explanation:

can i have branliest answer for no reason and god bless u

Answer:

period

Step-by-step explanation:

Part B
Jose predicts that the value of his car will decrease exponentially by 25% over the next 4 years. If Jose's prediction
is correct, about how much will his car be valued at, to the nearest thousand dollars, after 4 more years?

Answers

It will be more than 2,000 dollars

Alex wants to buy a house in 5 years. If he puts $3245 in an account at 7.35% compounded annually for 5 years. How much money will he have for a down payment on his house?

Answers

Answer: 32.78

Step-by-step explanation:

-6(x - 7)
Help Please

Answers

The answer for -6(x - 7) will be -6x + 42

Answer:

-6x + 42

I distributed the -6

You drinking soda while playing a video game. You drank 4 full drinks over 3 1/3 rounds. If you drank the same amount each round, how much did you drink each round?

Answers

The answer to your problem would be 1 1/5 of the drink per round.

Tony drives 2 times the hours that Monique does. Tony and Monique drive for a total of 12 hours.
How long did each person drive?

Answers

Answer:

so the answer would be he drives 8 hrs she drives 4 which equals 12

Step-by-step explanation:12 divided by 2 is six so then u take away 2 from moniques hrs and add them to tonys and u get 8 for him and 4 for her

Which value is a solution of the inequality 9 >_ 1/2x
18
20
24
36

Answers

the first one (18) is the answer

(-5y^2-9y-4)-(-2y^2-y+8)

Answers

Answer:

−3y2−8y−12

Step-by-step explanation:

Let's simplify step-by-step.

−5y2−9y−4−(−2y2−y+8)

Distribute the Negative Sign:

=−5y2−9y−4+−1(−2y2−y+8)

=−5y2+−9y+−4+−1(−2y2)+−1(−y)+(−1)(8)

=−5y2+−9y+−4+2y2+y+−8

Combine Like Terms:

=−5y2+−9y+−4+2y2+y+−8

=(−5y2+2y2)+(−9y+y)+(−4+−8)

=−3y2+−8y+−12

Answer:

[tex]-3y^2-8y-12[/tex]

Step-by-step explanation:

Simplify each term.

[tex]-5y^2-9y-4+2y^2+y-8[/tex]

Simplify by adding terms.

[tex]-3y^2-8y-12[/tex]

hope this helps :)

Jay jogs daily for exercise. he hits faster than 3.5 miles per hour every day. which inequality representd Jay's jogging speeds s?

Answers

Answer:

B

Step-by-step explanation:

The speed each day is faster than 3.5. Otherwise known as the mileage covered each day.

PLEASE HELP true or false I WILL MAKE BRAINLIEST

Answers

Answer:

True

Step-by-step explanation:

They are the same dimensions

Answer:

I think its true because there both the same shape and dimension

The equation of a function is
y = 12x - 7. What is the output when the input is 5?

A. 50
B. 53
C. 56
D. 60

Answers

the answer is B. 53
12 times 5 then sub 7
hope it helps
the answer is D
hope this helped

Twice a number is 17




Write it as an equation

Answers

The answer would be
~2*x=17~

Hope this helps

Have a great day/night

Please Help Me ASAP.

Answers

Answer:

Parallel lines ALWAYS have the same slope

Step-by-step explanation:

The equations have unequal slopes, meaning they aren't parallel.


please i’ve been stuck on this for days i need help

Answers

Answer:

x=12, y=9, z=7, w=3

Step-by-step explanation:

"Triple a number is 18."
Show all work

Answers

Answer: 6

Step-by-step explanation:

3x = 18

Divide 18 by 3

x = 6

The answer is 6 because you divide 18 by 3 since triple is 3 and you get 6

please help on this one.

Answers

Answer:

it's A

Step-by-step explanation:

look at the bolded line, it's after 4.4 which would mean z> 4.4

Answer:

A

Step-by-step explanation:

so we have a less than sign, which immediately tells us this going to be going left as 4.4 is greater. and obviously since the number is 4.4, the graph will have targeted that number. Hope this helps!

find the value of x ! geometry

Answers

Answer:

42.25485 or 42.25

Btw is this your homework or a test.

simplify (-4 - 3n) x -8

Answers

-4x-3nx-8 I think is the answer

What is the area of the rectangle?

Answers

Answer:

c. 15cm^2

Step-by-step explanation:

Answer:

c. 15 cm

Step-by-step explanation:

Area is multiplication of height and length, (or whatever you call it) and 5 multiplied by 3=15

Which of the following is a composite number between 1 and 10? A. 5 B. 3 C. 7 D. 4

Answers

Answer:

b

Step-by-step explanation:

Answer:

Answer is D.

Step-by-step explanation:

I hope it's helpful!

IS THE ANSWER B JUST TRYING TO CHECK

Answers

Answer:

No my dude its c

Step-by-step explanation:

Ophelia reads 104 pages in 2 hours, how many pages will she read in 3 hours? REMEMBER TO INCLUDE THE UNIT OF MEASURE (PAGES)
IN YOUR ANSWER.
eb9th
m 12:00
Your answer:

Answers

Answer:

156 pages.

Step-by-step explanation:

Ophelia's reading speed is 104 pages / 2 hours = 52 pages/hour. So in 3 hours she will have read 3 * 52 = 156 pages.

Find the volume
I really need your help

Answers

Answer:

[tex] V_{total} = 26460 \pi~cm^3 [/tex]

[tex] V_{total} = 83127~cm^3 [/tex]

Step-by-step explanation:

The solid is made up of 2 cones and a cylinder.

Upper cone:

radius = 21 cm

height = h_1 = 70 cm - 35 cm = 35 cm

Cylinder:

radius = 21 cm

height = h_2 = 35 cm

Lower cone:

radius = 21 cm

height = h_3 = 40 cm

[tex] V_{total} = V_{upper~cone} + V_cylinder} + V_{lower~cone} [/tex]

[tex] V_{total} = \dfrac{1}{3} \pi r^2 h_1 + \pi r^2 h_2 + \dfrac{1}{3} \pi r^2 h_3 [/tex]

[tex] V_{total} = \dfrac{1}{3}(\pi)(21~cm)^2(35~cm) + (\pi)(21~cm)^2(35~cm) + \dfrac{1}{3}(\pi)(21~cm)^2(40~cm) [/tex]

[tex] V_{total} = \dfrac{1}{3}(\pi)(441~cm^2)(35~cm) + (\pi)(441~cm^2)(35~cm) + \dfrac{1}{3}(\pi)(441~cm^2)(40~cm) [/tex]

[tex] V_{total} = (147~cm^2)(35~cm)(\pi) + (441~cm^2)(35~cm)(\pi) + (147~cm^2)(40~cm)(\pi) [/tex]

[tex] V_{total} = 5145\pi~cm^3 + 15435\pi ~cm^3 + 5880\pi~cm^3 [/tex]

[tex] V_{total} = 26460 \pi~cm^3 [/tex]

[tex] V_{total} = 83127~cm^3 [/tex]

Your bill at a restaurant was for $36. You want to leave a 15 % tip. What would the tip amount be?
$5.40
$6.20
$4.17
$2.40

Help please

Answers

The answer is $2.40.

36/15= 2.4
The anwser is actually $5.40

A large can is 12 inches high the radius of the top is 3.5 inches what is the area of a rectangular label that is wrapped around the can

Answers

Answer:

the aria is what you need to multiply together

Step-by-step explanation:

pls help me for 100 points!

Answers

Answer:

160

Step-by-step explanation:

Answer: 160

Step-by-step explanation:

The volume of this cube is 1 ft. What is its surface area? A 6 ft. B 1 ft? C 26 ft? D 10 ft?​

Answers

Answer:

A

Step-by-step explanation:

The surface area of the cube is 6 ft².

What is a cube?

It is a polygon having six faces.

The volume of a cube is side³.

We have,

Volume = 1 ft³

The surface area of the cube = 6a²

Now,

Volume = 1 ft³

This means,

Side = 1 ft

a = 1 ft

So,

The surface area of the cube.

= 6a²

= 6 x 1²

= 6 ft²

Thus,

The surface area of the cube is 6 ft².

Learn more about cubes here:

https://brainly.com/question/11168779

#SPJ6

What's the answer 1/5 divided by 4

Answers

Answer:

1/20

Step-by-step explanation:

1/5 divided by four is 1/20

5x4=20

Answer:

1/20

Step-by-step explanation:

1/5 / 4

cross multiply but first write 4/1

4 * 5 IS 20

1* 1 = 1

1/20

4. The costs of different sizes of bottled sport drink are shown. Which bottle costs the least per ounce?
Size
8 oz
16 oz
24 oz
32 oz
Price
$0.89
$1.09
$1.89
$2.39
A. The 8 oz bottle
B. The 16 oz bottle
C. The 24 oz bottle
D. The 32 oz bottle

Answers

I think it is the 16 oz bottle because it is only 6.8 cents per oz but I’m not positive sorry for not helping that much
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