This is the number of individuals out of the population you need to ask to partcipate in order to achieve the required sample size based on the expected response rate. The sample population p is 540 1000 054. The E is the desired margin of error.
MOE z p 1 - p n.
The zc is the critical value from the ztable for a 95 CI. For our formula we have a standard deviation of 17 a multiplier of 2576 from the powerpoint and a margin of error of 5. Slovins formula - is used to calculate the sample size n given the population size N and a margin of error e. The E is the desired margin of error.