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
Shkiper50 [21]
4 years ago
13

Two clinical trials were designed to test the effectiveness of laser treatment for acne. Seaton et al. (2003) randomly divided p

articipants into two groups. One group received the laser treatment, whereas the other group received a sham treatment. Orringer et al. (2004) used an alternative design in which laser treatment was applied to one side of the face, randomly chosen, and the sham treatment was applied to the other side. The number of facial lesions was the response variable.
Orringer et al. used _______________ in a ___________ design.
Seaton et al. used a completely _____________design.
Mathematics
1 answer:
Alex_Xolod [135]4 years ago
5 0

Answer:

Blocking in a paired design

Completed randomized design

Step-by-step explanation:

Orringer et. al used blocking in a paired design. He use the special type of randomized block design; a matched pair design wherein there is just two treatment conditions (laser treatment and the sham treatment) and the subjects are then group the subjects in pairs using the blocking variable which is a treatment applied to one side of face randomly chosen.

While Seaton et. al. used a completely randomized design. Here the subjects/participants are just merely assigned albeit randomly to either the laser or the sham treatment.

You might be interested in
5- -5 please someone I can use the help thank you!
QveST [7]

Answer:

-10 i think

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
According to a survey conducted by Netpop Research, 65% of new car buyers use online search engines as part of their car-buying
11111nata11111 [884]

Answer:

(a) 0.76

(b) 0.46

(c) 0.58

Step-by-step explanation:

Let's first list the probabilities of each event:

Buyers using online search engine: 0.65

Buyers skipping test drive = 0.11

Buyers that use search engines AND skip test drives = 0.65 * 0.11 = 0.07

(a) To find this probability, we simply need to add the probabilities of the above conditions that meet the criteria of the question. Since all of the above conditions meet the criteria set by the question, we have:

Probability = 0.65 + 0.11

Probability = 0.76

(b) The probability of buyers that do not use search engines = 1 - 0.65 = 0.35

Probability of buyers that do not use search engines OR do skip the test drive = 0.35 + 0.11 = 0.46

(c) Probability of buyers buyers that do not skip test drive = 1 - 0.11 = 0.89

Probability of buyers using online search engine AND not skipping the test drive = 0.65 * 0.89 = 0.58

(It must be noted that question c is phrased wrong. Since both events are independent, i.e buying a car OR skipping the test drive would mean 0.65 + 0.89 = 1.54 (not possible) )  

5 0
3 years ago
If there are 6 $5 bills how many 10$bills are there?
mezya [45]

Answer:

3

Step-by-step explanation:

6*5=30

30/10=3

3 0
3 years ago
Read 2 more answers
Please answer very confuse english very bad que?
nata0808 [166]

Answer:

for the first question, it's (2,2) and for the last question it's (0,2)

4 0
3 years ago
(8,8) and (6,-4) slope
dem82 [27]

Answer:

the formula to find slope is m=y1-y2/x1-x2

using this formula 8-6/8-(-4)

=2/8+4

=2/12 simplify

=1/6

5 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the value of x2 for 14 degrees of freedom and an area of .10 in the left tail of the
    9·1 answer
  • Which expression is equal to the expression below?<br><br> (7 x 2)^7
    13·2 answers
  • Can someone please help
    11·1 answer
  • Sandy receives a $35,000 salary for working as a chef. If Sandy spends approximately 4% of her salary on expenses each year, the
    12·1 answer
  • Which of the following points lie in quadrant III? (–2, –4) (–2, 4) (2, –4) (2, 4)
    8·2 answers
  • Help please I WILL MARK BRAINLIEST !!!!
    12·2 answers
  • Ron borrowed $20,000 to start up his consulting business. The loan had a simple interest rate of 66% for 4 years. Use the formul
    7·1 answer
  • HELP ME PLZZ<br> Which ratio is equal to 5 to 4 <br><br> 8 to 10<br> 10 to 8<br> 2 to 2<br> 15 to 16
    7·2 answers
  • Solve -4/5x =12<br><br> please help
    5·2 answers
  • A 170-inch board is cut into two pieces. One piece is four times the length of the other. Find the length of the shorter piece.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!