Three pressure sensors each produces a logic 'O' o/p when the pressure at their location falls below a pre-set
pressure P1, P2, or P3. A pump is to be turned on whenever
the pressure at all three locations falls below the pre-set
value.
Obtain the Boolean equation describing the required circuit?​

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