An experiment was conducted to test the effect of a new stain remover. Twenty stains were treated with stain remover A and stain remover B for a week; then the number of stains removed was measured. A significance test was conducted at the = 0.10 level for the mean difference in the number of stains removed between stain remover A and stain remover B. The test resulted in t = 1.37 and p = 0.17. If the alternative hypothesis in question is Ha: A B 0, where Aequals the mean number of stains removed with stain remover A and Bequals the mean number of stains removed with stain remover B, what conclusion can be drawn?

There is a significant difference in the mean effectiveness of two stain removers.

There is sufficient evidence that stain remover A works better than stain remover B.

The proportion of stains that stain remover A removed is greater than the proportion of stains removed by stain remover B.

There is insufficient evidence that the proportion of stains removed by stain remover A and stain remover B is different.

There is insufficient evidence that there is a difference in the mean effectiveness of stain remover A and the mean effectiveness of stain remover B.