point of infection

[billyXDD]

In a normal distribution with mean = 4 and standard deviation = 1, where would the points inflection be located?
A. z = ±1
B. z = 4 ± 1
C. z = 1± 4
D.z = 4± 4

 

[Harry_the_cat]

Points of inflection (not infection as in your heading!) occur one standard deviation above and below the mean. Can you answer the question now?