Question

A test is to be conducted involving the mean holding power of two glues designed for plastic. First, a small plastic hook was coated at one end with Epox glue and fastened to a sheet of plastic. After it dried, weight was added to the hook until it separated from the sheet of plastic. The weight was then recorded. This was repeated until 12 hooks were tested. The same procedure was followed for Holdtite glue, but only 10 hooks were used. The sample results, in pounds, were:

	Epox	Holdtite
Sample mean	210	255
Sample standard deviation	5	8
Sample size	12	10

State the decision rule for .01 significance level: H₀: μ₁ = μ₂; H₁: μ₁ ≠ μ₂ (Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.)

  Reject H₀ if t is not between and

Answer 1