The breaking strength of yarn used in the manufacture of wovencarpet material is Normally distributed with σ = 2.4 psi. A randomsample of 16 specimens of yarn from a production run was measuredfor breaking strength, and based on the mean of the sample (x bar),a confidence interval was found to be (128.7, 131.3). What is theconfidence level, C, of this interval?
Please show work and explain
A. 0.95
B. 0.99
C. 0.90
D. 0.97
E. it can not be determined with the info provided
