In a population of flatworms living in a certain pond, one in five individuals is adult and four are juvenile. An ecologist plans to count the adults...

In a population of flatworms living in a certain pond, one in five individuals is adult and four are juvenile. An ecologist plans to count the adults in a random sample of 20 flatworms from the pond. She will then use , the proportion of adults in the sample, as her estimate of p, the proportion of adults in the pond population. Find using the normal approximation with the continuity correction