Answered: A sample of 36 breastfed infants found…

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 sample of 36 breastfed infants found that 2 of them developed iron deficiency by age 5.5 months. Using the plus-four method, what is the 95% confidence interval for the population proportion of breastfed infants who have iron deficiency?

Choose from available choices.

a. (-0.0193, 0.1304)

b. (-0.0072, 0.1184)

c. (0.0071, 0.1929)

Expert Solution

Step 1

Given:

n=36

x=2

Since using the plus-four method, the modified

$\begin{array}{rcl} n^{'} & = & n + 4 \\ = & 36 + 4 \\ = & 40 \\ x^{'} & = & x + 2 \\ = & 2 + 2 \\ = & 4 \end{array}$

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