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 2414 subjects randomly selected from an online group involved with ears. 1116 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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10.

B. Identify the value of the margin of error E.

C. Construct the confidence interval.

**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 2414 subjects randomly selected from an online group involved with ears. 1116 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys.

[Click the icon to view a table of z scores.]

---

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

\[ \square \]

(Round to three decimal places as needed.)
Transcribed Image Text:**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 2414 subjects randomly selected from an online group involved with ears. 1116 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys. [Click the icon to view a table of z scores.] --- **a) Find the best point estimate of the population proportion \( p \).** \[ \square \] (Round to three decimal places as needed.)
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