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the number of carbohydrates in grams per 8 ounce serving of yogurt for each of a...

the number of carbohydrates in grams per 8 ounce serving of yogurt for each of a random selection of brands is listed below. Estimate the true population variance and standard deviation for the number of carbohydrates per 8 ounces serving of yogurt with 95 % confidence. Assume the variable is normally distributed.
17 42 41 20 39 41 35 15 43
25 38 33 42 23 17 25 34

also show how to solve using TI 84 please
Math   Statistics-And-Probability   
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