Gaetan wanted to test a new stain remover to see if it was more effective in removing grease stains from his pants. Which of the following would be the null hypothesis in Gaetan's experiment? The new stain removers will be more effective than the old one. The difference between the new stain remover and the old one will be significant. There will be no difference in the effectiveness of the new stain remover compared to the old one. The new stain remover could be more or less effective than the old one