Use the information provided below for the GRADES questions that follow. The final grades for three sections of STA2122 in Spring 2022 produced the following One-way Anova Excel output. We are interested in knowing if the grades are similar or not for these sections. We will conduct a One-way Anova F-test and use a 5% significance level. Anova: Single Factor For the following questions, just enter a number in each blank, without units. Do not round any numbers unless asked to do so. - The output contains two estimates of the common population variance. Which of the two estimates is based on the sample means? Which of the two estimates is based on the sample variances? - What was the standard deviation of the grades in section A, to two decimal places? - What was the variance of the grades in section B? - What was the total grade for section C? - How many students were in section A -What was the average grade for section B? - How many students were there altogether