help me with this standard deviation question
The fourth grade at school X is made up of 300 students who have a total weight of 21,600 pounds.If the weight of these four graders has a normal distribution and standard deviation equals 12 pounds, approximately what percentage of the fourth graders weighs more than 84 pounds?
a 12%
b 16%
c 36%
d 48%
e 60%
need detailed explanation,,and also want to know what are bell curve questions and how it will relate with standard deviaion. thanks
1 Comment
Recommended Comments