A comprehensive study of orphaned children is conducted in every orphanage in Australia. A scale called the Capacity for Attachment Scale is given to all orphaned children. The mean (μ) of the scale is 72 and the standard deviation (σ) is 13.
Assuming that the scores are normally distributed, what PERCENTAGE of the population falls between 90 and 63?
3 answers
Dany/Alicia -- please use the same name for your posts.
sorry me and a group are studying together and we all have similar questions and we can't figure out the answers
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between the two Z scores. Multiply by 100.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between the two Z scores. Multiply by 100.
1 answer