A researcher compared the number of cavities of children who

A researcher compared the number of cavities of children who had used either Toothpaste brand X or Toothpaste brand Y for a year. At the end of the year, the researcher found that the children who had used brand X had significantly fewer cavities than the children who had used brand Y. The difference was significant at the .05 level. 1. What is the null hypothesis? 2. What is the research hypothesis? 3. What would be the Type I error? 4. What would be the Type II error? 5. What is the probability of a Type I error?