1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kherson [118]
3 years ago
5

Elena is conducting an experiment to determine if the high school students are more relaxed when the lights are off or when musi

c is played during an exam. She selects 10 of her friends to take an exam with the lights off and another 10 of her friends to take an exam with music playing.
Required:
What is problematic about the way that Elena selected her groups?
Mathematics
1 answer:
Sedaia [141]3 years ago
4 0

Answer:

Problematic is that - only one factor should be analysed at a time. However she has considered both.

Step-by-step explanation:

Groups for any experimental study should be selected on the basis of one variable, other factor(s) remaining constant.

In this case, here are two variables - lights on or off, music playing or not playing - effecting relax level during exams.

She selects 10 students for exam with lights off , 10 for exam without music. This is problematic, as at once only lights or only music factor should be considered.

If one group is with light on , other should be with light off. If one group is with music, other should be without music. This mix up of one light off aspect & one music without music is inapt.

You might be interested in
Find the volume and surface area of this cylinder
Yanka [14]

Answer: V≈2613.81 and

SA= 1055.5751316062 feet2

Step-by-step explanation:

For surface area just sum it down to 1055.57 feet2

3 0
3 years ago
A smoothie recipe calls for 13 cup yogurt for each smoothie. How many cups of yogurt are needed to make 7 smoothies?
Sauron [17]
You could also say.
13 x
--- = ---
1 7
Multiply across.
1x=13×7
1x =91
Divide both sides by one.
x=91.
91 cups of yoygurt are needed to make 7 Smoothies.
Or you could do it the easy way.
whatever makes you happy. :)
3 0
3 years ago
Read 2 more answers
Which graph represents vaiable values for y= 5.5 where is x the number of cans of tomato paste and y is the total weigh of the s
kolezko [41]

Answer:

there is no answer put a picture

Step-by-step explanation:


5 0
3 years ago
-1-x^4/2-3x^2<br> Please help me
Romashka [77]

Answer:

hi there!

there are three answers: x= 1.367, -1.367, and 0

Step-by-step explanation:

please refer to the graph down below

8 0
3 years ago
Can someone pleaseeee help if you’re correct I’ll give u brainlist
Sedbober [7]

Answer:

35

Step-by-step explanation:

both the sides are equal. triangles add up to 180. 180-110 is 70. because the 2 sides are equal, you need to do 70 divided by 2, which is 35:)

3 0
3 years ago
Other questions:
  • Hey please help me if you can I would appreciate it
    12·2 answers
  • Find the area of a regular hexagon with the given measurement. 48-inch perimeter A = sq. in. the answer is a square root
    14·1 answer
  • Using the graph of f(x) = log2x below, approximate the value of y in the equation 22y = 5.
    8·2 answers
  • You drive 240 miles and use 8 gallons of gasoline. what was your car’s gas mileage? (In miles per gallon)
    11·2 answers
  • What is the solution to the inequality below x^2&gt;81
    6·1 answer
  • On Tuesday morning aiden walked to the bank to check his account balance he had $123 he withdrew $20 what was his balance on Tue
    11·1 answer
  • dante's mom will bake chocolate chip cookies for the children making snowman outside! she bake 60 cookies. Each child must have
    15·2 answers
  • Help please<br> dghsshjhjs
    7·1 answer
  • Which property of equality should be used with the equation c + 5 = 78 to solve?
    11·1 answer
  • Solve the derivative of f(x)= x^4e^tanx
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!