The distribution of a sample of the outside diameters of PVC pipes approximates a symmetrical, bell-shaped distribution. The ari thmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. About 68% of the outside diameters lie between what two amounts?
2 answers:
Answer:
Between 13.9 and 14.1 inches.
Step-by-step explanation:
This approximates to a normal distribution so 68% of the values will be within 1 standard deviation either side of the mean.
So about 68% of the diameters will lie between 13.9 and 14.1 inches.
Answer:
13.9 inches, 14.1 inches
Step-by-step explanation:
The empirical rule tells you 68% of the distribution lies within 1 standard deviation of the mean:
14.0 ± 0.1 = [13.9, 14.1]
About 68% of outside diameters lie between 13.9 inches and 14.1 inches .
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Step-by-step explanation:
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Answer:
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