This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A drug company wanted to test a new acne medication. The researchers found 300 adults aged and ... (Read 209 times)

WWatsford

  • Hero Member
  • *****
  • Posts: 539
    • Biology Forums!
on: Jul 25, 2018
A drug company wanted to test a new acne medication. The researchers found 300 adults aged and randomly assigned them to two groups. The first group received the new drug, while the second received a placebo.
 
  After one month of treatment, the percentage of each group whose acne symptoms decreased was recorded and compared. Identify the experimental units.
  A) the drug (medication or placebo)
  B) the 300 adults aged 25-35
  C) the percentage who had decreased acne symptoms
  D) the one month treatment time

Question 2

A 1-pound bag of peanuts contained 430 peanuts. The distribution of weights (in grams) of the peanuts is given below . What is the sample standard deviation of the weight of a peanut?
 
  Weights
  (grams) Frequency
 
  0.755 - 0.814 3
  0.815 - 0.874 2
  0.875 - 0.934 2
  0.935 - 0.994 2
  0.995 - 1.054 168
  1.055 - 1.114 241
  1.115 - 1.174 12
 
  A) 0.002 g B) 0.000004 g C) 0.045 g D) 0.209 g


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

helenmarkerine

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 25, 2018
Answer to Question 1

B

Answer to Question 2

C


WWatsford

  • Member
  • Posts: 539
Reply 2 on: Jul 25, 2018
Excellent

pratush dev

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Focus on older adults - risk for infection Focus on older adults - risk for infection
If the gauge reading is now much higher than the first test results, then the cause of the low ... If the gauge reading is now much higher than the first test results, then the cause of the low ...
Controlled Scientific Experiments Scientists use experimental research to test hypotheses Controlled Scientific Experiments Scientists use experimental research to test hypotheses
Otic drug administration Otic drug administration
Drug Label for Amlodipine Besylate Drug Label for Amlodipine Besylate
Data for a Hypothetical Paternity Test Using 13 CODIS Genes Data for a Hypothetical Paternity Test Using 13 CODIS Genes
Video: Primate Evolutionary Tree Animation

For a complete list of videos, visit our video library