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A suitcase was weighed using four separate hand-held luggage spring scales, and the following data were recorded: 48.7lb,49.5lb,49.3lb,48.5lb. 1. If the four values are added together, what is the total, reported to correct significant figures? What happened to the number of significant figures as a result of this calculation? 2. Calculate the mean and the stondard deviation of these measurements. (Refer to the example calculation on page 4 below.) 3. How could you best report these results, communicating the uncertainty and using correct sig figs? 4. Suppose you repeated these measurements with a total of 100 similar luggage scales. Assuming the results are normally distributed, approximately how many of the scales would you expect to give a reading within the range of 48.0 to 50.0lb