In a manufacturing process a machine produces bolts. The lengths of the bolts follow a normal distribution with an average of 3 cm and a variance of 0.03 cm2. If we randomly select three bolts from this process:
-What is the standard deviation of the sample mean?
A)03
B)01
C)1732
D)0577
E)10

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The Answer of In a manufacturing process a machine produces bolts. The lengths of the bolts follow a normal distribution with an average of 3 cm and a variance of 0.03 cm2. If we randomly select three bolts from this process:
-What is the standard deviation of the sample mean?
A)03
B)01
C)1732
D)0577
E)10

In a Manufacturing Process a Machine Produces Bolts