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
Likurg_2 [28]
3 years ago
6

A study attempts to compare two sunscreens. Each of 50 subjects with varying skin complexions will use both sunscreens—Screen A

on one side of his or her body and Screen B on the other side. For each subject, a coin is tossed in order to determine which side receives Screen A and which receives Screen B. Researchers measure the amount of ultraviolet light exposure over both treated areas for each subject. This is an example of:
A. the placebo effect.B. a stratified analysis.C. a double-blind observational study.D. a matched pairs experiment.
Mathematics
1 answer:
OverLord2011 [107]3 years ago
8 0

Answer:

D. a matched pairs experiment.

Step-by-step explanation:

A matched pairs experiment can be designed when there are only two possible treatment conditions (Screen A and Screen B) within an experiment and the subjects can be accordingly grouped into pairs (Both sides of the body of a same person, since both sides present the same skin complexion). Within each pair (both sides of the subject's body), subjects are randomly assigned (coin toss) to different treatments.

Therefore, this experiment is an example of a matched pairs experiment.

You might be interested in
A cereal box has a length of 8 inches, a width of 2 inches and a height of 12 inches. What is the volume of the cereal box?
DochEvi [55]

Answer:

192 in cubed

Step-by-step explanation:

Multiply 12*2= 24*8

6 0
3 years ago
Read 2 more answers
Quick! 25 points!!!!!!!
juin [17]

Answer:

1. 4

2. 9

3. <

Step-by-step explanation:

The ratio 4 to 5 means that the left model should have 4 segments shaded (out of 5 given).

The ratio 9 to 10 means that the right model should have 9 segments shaded (out of 10 given).

Compare the shaded regions. If you draw the horizontal line in the left model. then there will be 8 segments shaded (out of 10), this means the ratio 4 : 5 is less than the ratio 9 : 10.

5 0
3 years ago
Read 2 more answers
I don’t get this help
Ahat [919]

Answer:

its the 4th one

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can anyone explain tonme how to do this please?
Mars2501 [29]
C is right. She has partially completed the construction. Her next step is to use the arc markings to determine the radius to construct the circle.
4 0
3 years ago
Read 2 more answers
Find using appropriate Properties:<br> 6/7 x -2/3 + 3/5 + 5/8 x -6/7
Valentin [98]

The simplified form of the expression is given as 83x/56 -(97/105)

<h3>Finding the value of unknown variables</h3>

Alphabets are usually represented as unknown variables in a equation or expression.

Given the following expression shown below

6/7 x -2/3 + 3/5 + 5/8 x -6/7

Collect the like terms to have;

6/7 x+ 5/8 x  -2/3 + 3/5 -6/7

Simplify

48x+35x/56 - (70-63 + 90)/105

The final expression will be given as;

83x/56 -(97/105)

Hence the simplified form of the expression is given as 83x/56 -(97/105)

Learn more on expression simplification here: brainly.com/question/723406

#SPJ1

3 0
1 year ago
Other questions:
  • The length of the shorter base in an isosceles trapezoid is 4 in, its altitude is 5 in, and the measure of one of its obtuse ang
    6·1 answer
  • 6b &lt; 24 or 4b + 12 &gt; 4
    14·1 answer
  • The probability that Tina makes a free throw in basketball is 11 percent. If she shoots 94 free throws tonight, how many should
    12·1 answer
  • Kayla wants to use the Babylonian method to estimate to the nearest hundredth. Her initial estimate is 6.9. What is her estimate
    14·2 answers
  • The sum of a two digit number is 10. If the digits are reversed, the new number is 36 less than the original number. Find the or
    9·1 answer
  • You randomly select one card from a​ 52-card deck. find the probability of selecting a jack of club or the two of diamonds
    11·2 answers
  • Which expression means the same as "subtract 3 from 7 and then multiply by
    14·2 answers
  • purchasing a movie combo pack of one popcorn and two drinks for 14 saves 4 compared to purchasing the items individually. if a d
    10·2 answers
  • Use the graph of the quadratic function, g(x), to answer each question.
    9·1 answer
  • F(x)=2x^2-4x-18 find f(-6)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!