The county animal shelter regulations state that animals mus

The county animal shelter regulations state that animals must be seen by a veterinarian within 5 days of admittance to the shelter. An audit of the records at a particular shelter show that in June, 40% of the animals were seen by a veterinarian within 5 days of admittance to the shelter. The shelter director is issued a warning. 3 months later, a county inspector comes to the shelter and takes a random sample of 80 animals. What is the standard error of the proportion for this sample?

Solution

Note that the standard error is given by

SE = sqrt(p(1-p)/n)

= sqrt(0.40*(1-0.40)/80)

= 0.054772256 [ANSWER]