niku

 Mean weight of the packets = 1.24 kg  Standard Deviation, SD = 0.04kg  Variance = 0.04^2 = 0.0016  Standard Error, SE = 0.04/sqrt (25) • = 0.04/5 = 0.008  Considering 99.7% confidence level the means will lie between (1.2+3SE) and (1.2-3SE)  Upper...