A Researcher Wants to Determine the Proportion of Elm Trees

question 97

Essay

A researcher wants to determine the proportion of elm trees in Windsor, Ontario, dying of Dutch elm disease. Past experiments, based on large sample sizes, have shown this proportion to be 0.3. What sample size does the researcher need in order to estimate this proportion to within 0.04 with 95% confidence? Justify your conclusion.

---

Definitions:

Introspection

Deliberate looking into one’s own cognitive processes to examine one’s thoughts and emotions.

Continuous Reinforcement

A schedule of reinforcement in which every correct response is reinforced.

Household Chore

A household chore is a task or duty that is typically performed in and around one's home, such as cleaning, cooking, or gardening, often regarded as part of the routine maintenance of the household.

Chocolate Bar

A snack or confectionery made primarily from chocolate, often sweetened and can contain a variety of fillings like nuts, fruits, or caramel.