Question

create a survey results that have a sample proportion of 23%
douglas
the lenghts of a certain species of fish was found to be normally distributed. the mean lenghts is 77 cm with a standard deviation of 13cm. In a school of 380 of these fish how many would be longer than 64cm
PsyDAG
23% of what?

Second post:

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to Z score. Multiply by 380.