Null hypothesis or what - USMLE Forums
 USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
 Home USMLE Articles USMLE News USMLE Polls USMLE Books USMLE Apps
 USMLE Forums Null hypothesis or what
 Register FAQs Members List Search Today's Posts Mark Forums Read

 USMLE Step 2 CK Forum USMLE Step 2 CK Discussion Forum: Let's talk about anything related to USMLE Step 2 CK exam

#1
07-15-2012
 USMLE Forums Master Steps History: 1+CK+CS Posts: 1,867 Threads: 149 Thanked 2,106 Times in 1,049 Posts Reputation: 2126
Null hypothesis or what

Measurements on a (random) sample of babies born to mothers who took “Prescription Drug A” during pregnancy were compared to measurements on a (random) sample of babies born to mothers who did not take “Prescription Drug A”. A statistically significant difference in the mean head circumference was found between children born to the two groups of mothers (p = .03). Based only on this information you can conclude:

a. There is a 3% chance the null hypothesis is true.
b. Taking “Prescription Drug A” during pregnancy causes a reduction in child’s head circumference.
c. Taking “Prescription Drug A” is associated with an increased child head circumference.
d. The sample mean difference in children’s head circumference between children born to the two groups of mothers is clinically important/significant.
e. None of the above

#2
07-15-2012
 USMLE Forums Master Steps History: 1+CK+CS Posts: 646 Threads: 52 Thanked 762 Times in 256 Posts Reputation: 773

a. There is a 3% chance the null hypothesis is true.
#3
07-15-2012
 USMLE Forums Veteran Steps History: 1+CK+CS Posts: 257 Threads: 69 Thanked 122 Times in 63 Posts Reputation: 132

 Tags Biostatistics-Epidemiology, Step-2-Questions

Message:
Options

## Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
User Name:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
 AMG IMG ---
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

 Not yet Step 1 Only CK Only CS Only 1 + CK 1 + CS 1+CK+CS CK+CS 1+CK+CS+3 ---
Favorite USMLE Books
 What USMLE books you really think are useful. Leave blank if you don't want to tell.
Location
 Where you live. Leave blank if you don't want to tell.

## Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.