Question

In a normal distribution, what percent of the data lie below 2 standard deviations of the mean?

Answer 1

5%

Answer 2

1sd = 68%

2sd = 95%

Answer 3

maybe 2.5% on each side?

Answer 4

2.3 or 4.6

Answer 5

if we are below the mean; we have about 2.5% under 2sd

Answer 6

the total percent that is 2sd from the mean is 5%; so half above the mean and half below it

Answer 7

i would go with 2.5 cuz it says below right?

Answer 8

yes; thats my thought :)

Answer 9

i mean 2.3

Answer 10

if 2.3 is a choice then yes

Answer 11

hey do you any good websites that can help me with z-scores...