Question: After testing the product, quality control team found that 21% of them showed some defect. How many products must be tested to be 77% confident

After testing the product, quality control team found that 21% of them showed some defect. How many products must be tested to be 77% confident that the error in estimating the true value of p is less than 8%? Assume the distribution is normal.

Solution:

Critical Value =

2- Number of products to be tested =

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