« previous next »

Author Question: A ____ study is designed to test a new drug or treatment in a small group of people to evaluate its ... (Read 86 times)

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
on: Jun 19, 2018
A ____ study is designed to test a new drug or treatment in a small group of people to evaluate its safety, determine a safe dosage range, and identify potential side effects.
 
  a. pilot
 b. Phase I
 c. Phase II
 d. Phase III

Question 2

How does a t test differ from a z test in terms of when it is used, how it is calculated, and how we determine significance?
 
  What will be an ideal response?


blakcmamba

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jun 19, 2018
Answer to Question 1

b

Answer to Question 2

A t test differs from a z test in that s is not needed to make the calculations and the sample size should be smaller (30 or lower), whereas for a z test s is known and the samples are 30 or greater. The calculations are similar except that with a t test they are based on using s (the estimated standard deviation) rather than s. The z test has set critical values to determine significance and the critical values for the t test vary based on sample size.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to
Patients with Parkinson's disease embroyonic stem cell treatment Patients with Parkinson's disease embroyonic stem cell treatment
Subcutaneous drug administration: (d) the needle is removed and the puncture site is covered with an Subcutaneous drug administration: (d) the needle is removed and the puncture site is covered with an
Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines
Basic sliding effleurage using the thumb gets into the small spaces between the metatarsals of the ... Basic sliding effleurage using the thumb gets into the small spaces between the metatarsals of the ...
Study Duddy 1 Study Duddy 1
Video: Allergic Rhinitis

For a complete list of videos, visit our video library