Construct a 90% confidence interval for the proportion of returned surveys. (Round to three decimal places) a) Find the best point estimate of the population proportion p. b) Identify the value of the margin of error E. c) Construct the confidence interval. ___ < p < ___

Construct a 90% confidence interval for the proportion of returned surveys. (Round to three decimal places) a) Find the best point estimate of the population proportion p. b) Identify the value of the margin of error E. c) Construct the confidence interval. _ < p < _

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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Question

Use the sample data and confidence level given below to complete parts (a) through (c).

In a study of cell phone use and brain hemispheric dominance, an Internet survey was emailed to 2650 subjects randomly selected from an online group involved with ears. 1023 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. (Round to three decimal places)

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

b) Identify the value of the margin of error E.

c) Construct the confidence interval. ___ < p < ___

Expert Solution