Question
The weights of trout in a certain river follow a normal distribution with mean 3 pounds and standard deviation 0.8 pounds. What proportion of trout weigh between 3.2 pounds and 4.8 pounds?
a.) .3891
b.) .9972
c.) .9452
d.) .5865
a.) .3891
b.) .9972
c.) .9452
d.) .5865
Answers
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.
Anonymous
d. 5865