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 131 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
Thanks for the timely response, appreciate it

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Pulmonary function test Pulmonary function test
Instilling Ear Medication Instilling Ear Medication
Drug classes used in the pharmacotherapy of asthma. Drug classes used in the pharmacotherapy of asthma.
Mantoux tuberculin skin test. Mantoux tuberculin skin test.
Many different types of labels may be found on packages containing hazardous materials. Clockwise ... Many different types of labels may be found on packages containing hazardous materials. Clockwise ...
Phosphorus in Phospholipids Phosphorus makes up part of the phospholipids found in cell membranes Phosphorus in Phospholipids Phosphorus makes up part of the phospholipids found in cell membranes
Video: Uterine (menstrual) cycle - phases

For a complete list of videos, visit our video library