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the amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.8, 15.6, 15.1, 15.2, 15.1, 15.5, 15.9, 15.5 construct a 97.8% confidence interval for the mean amount of juice in all such bottles. assume an approximate normal distribution. a) (15.214, 15.711) b) (15.145, 15.780) c) (15.197, 15.728) d) (15.244, 15.681) e) none of the above