Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows: 79.7 75.1 78.2 74.1 73.9 75.0 77.6 77.3 73.8 74.6 75.5 74.0 74.7 75.9 72.8 73.8 74.2 78.1 75.4 76.3 75.3 76.2 74.9 78.0 75.1 76.8 if necessary, round all intermediate calculations to four decimal places (e. g. 12.3456). (a) calculate a point estimate of the mean pull-off force of all connectors in the population (round the answer to four decimal places (e. g. 90. (b) calculate a point estimate of the pull-off force value that separates the weakest 50% of the connectors in the population from the strongest 50% (express the answer to two decimal place (e. g. 90. (c) calculate the point estimate of the population variance (round the answer to three decimal places (e. g. 3.