The output voltage of a power supply unit has an unknown
distribution. Using a sample size of 36, sixteen samples are taken
with the following sample-mean values: 10.35 V, 9.30 V, 10.00 V,
9.96 V, 11.65 V, 12.00 V, 11.25 V, 9.58 V, 11.54 V, 9.95 V, 10.28
V, 8.37 V, 10.44 V, 9.25 V 9.38 V and 10.85 V. Let µ and
σ2 denote the mean and the variance of the
output voltage of the power supply unit. (a)...