Biostatistics Quiz
20 questions · no time limit
0:00
SAMPLING & ESTIMATION
Question 1 of 20
No time limit
Current
Answered
Flagged
Not seen
A pharmaceutical company tests a new drug on 500 patients and observes that 175 show improvement. The 95% confidence interval for the proportion showing improvement is calculated as (0.31, 0.39). What is the most likely explanation if a colleague calculated the interval as (0.29, 0.41)?
YOUR PROGRESS
20
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCDE
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end