Laboratory scale. The manufacturer of a laboratory scale claims their scale is accurate to within 0.0015 g. You read the documentation for the scale and learn that this means that the standard deviation of an individual measurement (σ) is equal to 0.0015 g. Assume measurements vary according to a Normal distribution with μ equal to the actual weight of the object. You weigh the same specimen twice and get readings of 24.31 and 24.34 g. Based on this information, calculate a 95% confidence interval for the true weight of the object.