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Use the sample data and confidence level given below to complete parts (a) through (d).In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2580 subjects randomly selected from an online group involvedwith ears. 975 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveysClick the icon to view a table of z scoresa) Find the best point estimate of the population proportion p(Round to three decimal places as needed)

Respuesta :

Given:

Sample size, n= 2580

Surveys returned = 975

Confidence interval = 90%

Let's solve for the following:

• (a). Find the best point estimate of the population proportion p.

To find the population proportion, apply the formula:

[tex]p^{\prime}=\frac{x}{n}[/tex]

Where:

x = 975

n = 2580

Hence, we have:

[tex]\begin{gathered} p^{\prime}=\frac{975}{2580} \\ \\ p^{\prime}=0.378 \end{gathered}[/tex]

Therefore, the best point estimate of the population proportion is 0.378

ANSWER:

(a). 0.378

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