I have 10 questions for this assignment can anyone help?

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

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?