Question
what percentage of students studied between 30 and 40 hours? Range 10-50, Mean- 35, standard deviation-5.
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 two Z scores.
It should be close to 68%.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the two Z scores.
It should be close to 68%.