A 98% confidence intervals for the proportion of first-year statistics students with brown hair is given to be (0.28, 0.42). (d) What is the standard error of the estimate? (Round to 3 decimal places, if needed.) (e) What was the sample size? (Round to the appropriate integer.)

A 98% confidence intervals for the proportion of first-year statistics students with brown hair is given to be (0.28, 0.42). (d) What is the standard error of the estimate? (Round to 3 decimal places, if needed.) (e) What was the sample size? (Round to the appropriate integer.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A 98% confidence intervals for the proportion of first-year statistics students with brown hair is given to be (0.28, 0.42).

(d) What is the standard error of the estimate?
(Round to 3 decimal places, if needed.)

(e) What was the sample size?
(Round to the appropriate integer.)

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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