In a study to isolate both gauge repeatability and gauge

In a study to isolate both gauge repeatability and gauge reproducibility, two operators use the same gauge to measure ten parts three times each. The data are shown in Table 8E.10.
In a study to isolate both gauge repeatability and gauge

(a) Estimate gauge repeatability and reproducibility.
(b) Estimate the standard deviation of measurement error.
(c) If the specifications are at 50 ± 10, what can you say about gauge capability?