Question

2.) Estimate the population proportions for each of the following data:

a.) In a plant box consisting of 120 seedlings, 80 seedlings were treated with growth enhancer. Estimate p and q.

b.) In a survey of 80 children, 48 like to watch horror films. Find and , where is the proportion of children who like to watch horror films.

Answer 1

2.

a.

$$p=\dfrac{x}{n}=\dfrac{80}{120}=\dfrac{2}{3}$$ $$q=1-p=1-\dfrac{2}{3}=\dfrac{1}{3}$$

b.

$$p=\dfrac{x}{n}=\dfrac{48}{80}=0.6$$ $$q=1-p=1-0.6=0.4$$