Answer :
Based on the given information, the interpretation of the true interval is correct. The person is 95% confident that the cow fed this supplement will gain weight between 45 and 67 pounds, which means that if the experiment were repeated multiple times, 95% of the intervals calculated would contain the true weight gain.
Based on the information provided, the correct interpretation of the 95% confidence interval for the weight gain of a cow fed this supplement is: "We are 95% confident that the true mean weight gain of a cow fed this supplement lies between 45 and 67 pounds."
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