As an industrial engineer is working a test of material used to on a certain product to determine whether it is more economical to repair a damaged area rather than replace the entire structure. The engineer obtained the following data on the bond length (x variable) vs. the rupture load (y variable) Bond Length (mm) Rupture Load (N) 50                                17,052 50                                14,063 80                                26,264

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As an industrial engineer is working a test of material used to on a certain product to determine whether it is more economical to repair a damaged area rather than replace the entire structure. The engineer obtained the following data on the bond length (x variable) vs. the rupture load (y variable)

Bond Length (mm) Rupture Load (N)
50                                17,052
50                                14,063
80                                26,264
80                                19,600
110                                21,952
110                                26,362
140                                26,362
140                                26,754
170                                31,654
170                                32,928

Find the 95% Confidence Interval for the conditional mean of the response variable at x = 140

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