# Question: The tensile strength of fiber used in manufacturing cloth is

The tensile strength of fiber used in manufacturing cloth is of interest to the purchaser. Previous experience indicates that the standard deviation of tensile strength is 2 psi. A random sample of eight fiber specimens is selected, and the average tensile strength is found to be 127 psi.

a. Build a 95% lower confidence interval in the mean tensile strength.

b. What can you conclude?

a. Build a 95% lower confidence interval in the mean tensile strength.

b. What can you conclude?

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