Extracted text: Tutorial 4 Question 1 Based on the given annual rainfall data and the Weibull distribution, 1. develop and plot the relationship between annual rainfall and the frequency, 2. calculate the rainfall intensity with a 10-years return period, 3. calculate the exceedance probability of an event of 125 mm and 4. estimate the design rainfall for a 100-years return period. Year 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 P (mm) 70 121 92 66 74 95 06 91 90 90 | 82 96 Year 1992 1993 1994 1995 1996 997 1998 1999 2000 2001 2002 2003 2004 P (mm) 110 115 100 88 80 87 80 72 103 99 97 98