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A sample of 52 research cotton samples resulted in a sample average percentage elongation of 8.11 and a sample standard deviation of 1.48. Calculate a 95% large-sample CI 'For the true average percentage elongation 1;. (Round your answers to three decimal places.) (_x _X) What assumptions are you making about the distribution of percentage elongation? {i} We assume the distribution of percentage elongation is normal with the value of El' unl-cnown. 0 We make no assumptions about the distribution of percentage elongation. 0 We assume the distribution of percentage elongation is normal with the value of 0' known. 0 We assume the distribution of percentage elongation is uniform