zoinnk wrote:
vivektripathi wrote:
A certain characteristic in a large population has a distribution that is symmetric about the
mean m. If 68 percent of the distribution lies within one standard deviation d of the mean,
what percent of the distribution is less than m +d ?
A. 16%
B. 32%
C. 48%
D. 84%
E. 92%
D
The prompt says that 68% of the population lies between m-d and m+d.
Thus, 32% of the population is less than m-d or greater than m+d.
Since the population is symmetric, half of this 32% is less than m-d and half is greater than m+d.
Thus, (68+16)% or (100-16)% of the population is less than m+d.
Hi Team,
i think i cannot understand the language of these type of questions.
i have the problem of understanding the question language only in standard deviation and mean questions.
if anyone has like 5-10 ques for practice of this sort of questions then please post here for me. Thanks in advance!
Query : in this particular question how does the line " If 68 percent of the distribution lies within one standard deviation d of the mean" means that "The prompt says that 68% of the population lies between m-d and m+d."
i cant understand even the base of the question here. Please help me out .
Thanks a lot.