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You sample 100 apples from your farm's harvest of over 200,000 apples. The mean weight of...

You sample 100 apples from your farm's harvest of over 200,000 apples. The mean weight of the sample is 112 grams. Let's assume that you know the weight of all apples produced by your farm is normally distributed and the standard deviation of the weight is 40 grams. If we want to double the length of the confidence interval found in Part (1) while keeping the same sample size to be 100, what is the confidence level should we choose to begin with?

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