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A machine is producing metal pieces that are cylindrical in shape. A
Let to.005.83.355, 10.01.82.896
the exam.
sample of pieces is taken and the diameters are 1.01, 0.97. 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, 1.03 (centimeters).
From this sample, one can compute a mean of 1.005 and a standard deviation of 0.025.
Find a 99% confidence interval for the mean diameter of pieces from this machine, assuming an approximate normal distribution.
A. None of the other choices is correct
Β. (0.878, 1.043)
C. (0.998, 1.083)
D. (0.977, 1.033)
Ε. (0.678, 1.093)
