Question

A quality analyst runs a hypothesis test to determine whether a new supplier's parts have a different mean tensile strength than the current supplier's parts. Using a significance level of 0.05, the test produces a p-value of 0.18. What is the correct conclusion?

Accepted Answer

Fail to reject the null hypothesis; there is insufficient evidence of a difference in mean tensile strength.

Answer

Reject the null hypothesis; the new supplier's parts are significantly different.

Answer

Accept the null hypothesis as proven true; the two suppliers' parts are identical.

Answer

The result is invalid because the p-value must be below 0.01 to draw any conclusion.