Taguchi loss function

A computer chip designed by the MicroKeeb Co $.$ ?has a specification for the distance between two adjacent pins of $2\mathrm{.}000\backslash$ pm $0\mathrm{.}002$ ?mm $.$ ?The loss due to a defective chip is $ $4.$ ?A sample of $25$ ?chips was drawn from the production process and the results, in millimeters, can be found in the worksheet tab Prob. $7-13$ ?in the Excel file C $07$ Data file.

a $.$ ?Compute the value of k in the Taguchi loss function.

b $.$ ?What is the expected loss from this process based on the sample data?