2. An oven knob is to be designed with a level of safety so as not to be turned on by children. Therefore, the knob requires a level of strength. Data was collected for the pinch grip strength of a number of people and the values were recorded in table 1. a. Using the collected data, Calculate the minimum force required for 60% of the population to turn the knob. 15 points b. In this problem, you are using the below data to calculate the minimum strength, but this approach is not correct. Explain why this is a wrong approach, and what would be the correct one? 15 points Table 1. 2 3 5 No. 1 Pinch grip (N) 5 4 6 4 3 9