please use r code

Question 21 4 points Save Answer The resulting p-value from a one-way ANOVA is 0.04 based on a sample of over 500 patients. The level of significance was pre-defined to be 0.05. Which of the following is true? Select all that apply. We may have made a Type I Error We could have failed to reject the null hypothesis if we had decided the significance level to be 0.01 instead. We have sufficient evidence to reject the null hypothesis at the alpha=0.05 level . We aren't sure whether there really is no difference between groups with respect to the mean outcome value or it is due to our sample size being too small. We may have made a Type II Error