Please answer quickly

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

The mini-refrigerator fire was most likely caused by what type of wiring?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?