Answer the following: A. Past records showed that the average final examination grade in General Mathematics is 70 with a standard deviation of 8.0. A random sample of 100 students was taken and found to have a mean final exam grade of 71.8. Is this an indication that the sample is better than the rest of the students? Test at 0.05 level of significance. Given: μ= Formula to be used: Solution: 1. Computation:​