Mean count of 100 samples of yarn was found to be 40’s with a SD of 6’s Ne. How many tests are required to make at 95% confidence limit, error in yarn count be 2.56 %.
Answer: To determine the number of tests required to achieve a certain level of confidence with a given margin of error, we can use the formula for the confidence interval of the mean: Margin of Error = (Z_(α/2) *σ) / √n Where: – Z is the z-score corresponding to the desired confidence level, – σ is … Read more