Asked by kim
what percentage of students studied between 30 and 40 hours? Range 10-50, Mean- 35, standard deviation-5.
Answers
Answered by
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%.
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