The following are the weights, in decagrams, of 10 packages of grass seed distributed by a certain company: 44.4, 46.1, 43.8, 47.5, 46.1, 45.9, 45.8, 47.9, 47.2, and 46.0. Find a 95% confidence interval for the variance of the weights of all such packages of grass seed distributed by this company, assuming a normal population.

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