Please show the full solution and proper notation and terminology. 1. A production manager wants to estimate the proportion of defective parts received from a new supplier. She believes that defective proportion is no more than 0.20 and wants to be within 0.02 of the true proportion of defective parts with 90% level of confidence. How large a sample should she take?  thanks.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Please show the full solution and proper notation and terminology.

1. A production manager wants to estimate the proportion of defective parts received from a new supplier. She believes that defective proportion is no more than 0.20 and wants to be within 0.02 of the true proportion of defective parts with 90% level of confidence. How large a sample should she take? 

thanks.

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