Data on pump failures from Gaver, D. P. and O'Muircheartaigh, I. G. (1987).
The matrix pump has 10 rows and 2 columns.
Each row relates to a different pump system.
The first column contains the number of pump failures.
The second column contains the length of operating time, in
thousands of hours.
pumpA matrix 10 rows and 2 columns.
Table 3 of Gaver, D. P. and O'Muircheartaigh, I. G. (1987). See also Gelfand, A. E. and Smith, A. F. M. (1990).
Gaver, D. P. and O'Muircheartaigh, I. G. (1987) Robust Empirical Bayes Analyses of Event Rates. Technometrics, 29, 1-15. doi:10.1080/00401706.1987.10488178
Gelfand, A. E. and Smith, A. F. M. (1990) Sampling-Based Approaches to Calculating Marginal Densities. Journal of the American Statistical Association, 85(410), 398-409. doi:10.1080/01621459.1990.10476213