Perform a chi-square goodness-of-fit test on the following data for the minimum extreme-value distribution. Data represent the number of years until flaws were observed in prestressed concrete bridge...

Perform a chi-square goodness-of-fit test on the following data for the minimum extreme-value distribution. Data represent the number of years until flaws were observed in prestressed concrete bridge supports. Group the data in cells having upper bounds of 10, 15, 20, 25, and 30 years. Test at the 15-percent level. Treat as complete data.