Suppose that a garage finds that 42 customers of 142 customers samples get their oil changes on time. Find a 98% confidence interval of the true proportion. What is the lower bound of the confidence interval? (round to 4 decimal places)

Suppose that a garage finds that 42 customers of 142 customers samples get their oil changes on time. Find a 98% confidence interval of the true proportion. What is the lower bound of the confidence interval? (round to 4 decimal places)

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

Suppose that a garage finds that 42 customers of 142 customers samples get their oil changes on time. Find a 98% confidence interval of the true proportion.

What is the lower bound of the confidence interval? (round to 4 decimal places)

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