The measurements in a data set are subject to random errors, but it is known that the data set fits a Gaussian distribution. Use error function tables to determine the value of x required such that...

The measurements in a data set are subject to random errors, but it is known that the

data set fits a Gaussian distribution. Use error function tables to determine the value

of x required such that 95% of the measurements lie within the boundaries of xs,

where s is the standard deviation of the measurements.