Determine the magnitude and the point of application of the smallestadditional load that must be applied to the foundation mat ofProb. 3.131 if the resultant of the five loads is to pass through thecenter of the mat.

3.3 INFERENCE FOR POPULATION VARIANCE 1) We can calculate the estimated population variancewith 2) also note that this is true: 2 *where X is representative of the chi square distribution with n-1 degrees of freedom 3.3.1 CONFIDENCE INTERVAL 3.3.2 HYPOTHESIS TEST 2 1) To test something dealing with σ we use test statistic: where the null hypothesis is still rejected when p-value