Question

Consider the following information about three populations:

Red Salmon:
mean= 12 lbs. standard deviation= 3 lbs.
% of salmon > 18lbs. = 20%
% of salmon < 6 lbs. = 10%

Blue Salmon:
mean= 15 lbs. standard deviation= 5 lbs.
% of salmon > 25 lbs. = 2.5%
% of salmon< 10 lbs. = 16%

White salmon:
mean= 16 lbs. standard deviation= 4 lbs.
% of salmon > 18 lbs. = 30%
% of salmon < 10 lbs.= 30%


Which of the following populations may be normally distributed?

A. Blue salmon only
B. White salmon only
C. Red and white salmon
D. Red salmon only
E. None of the above

Answer 1

I would think it would be E because can't populations not be normally distributed. But i don't think it would be that easy... please help someone!