The tensile strength of a certain synthetic fiber is
Chapter , Problem 48(choose chapter or problem)
The tensile strength of a certain synthetic fiber is thought to be related to x1, the percentage of cotton in the fiber, and x2, the drying time of the fiber. A test of 10 pieces of fiber produced under different conditions yielded the following results. Y = Tensile x 1 = Percentage x 2 = Drying Strength of Cotton Time 213 13 2.1 220 15 2.3 216 14 2.2 225 18 2.5 235 19 3.2 218 20 2.4 239 22 3.4 243 17 4.1 233 16 4.0 240 18 4.3 (a) Fit a multiple regression equation. (b) Determine a 90 percent confidence interval for the mean tensile strength of a synthetic fiber having 21 percent cotton whose drying time is 3.6.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer