I've a question here. Basically I have the mean and standard deviation of a variable (IQ). I want to find the probability that 8 out of 10 people randomly selected have IQ scores between 85.0 and 122.5.
I also have the following information worked out:
- mean = 100
- standard distribution = 15
- n = 10
- p = 0.7745
Should I be using Poisson to do this?
Appreciate any directions and advice please.