Fundamentals of Probability and Statistics for Engineers

Table 8.5 Arrivals per minute at a New York State Thruway toll booth

9 9 11 15 6 11 9 6 11 8 10

3985715 7146616

6 8 10 6 10 11 9 7 7 11 10

3847156 77875

13 12 11 10 8 14 3 15 13 5 7

12 710 416 711111310

9101166 89555

11 6 7 9 5 12 12 4 13 4

12 16 10 14 15 16 10 8 10 6

18 13 6 9 4 13 14 6 10 10

Table 8.6 Annual snowfall, in inches, in Buffalo, NY,1909–2002

Year Snowfall Year Snowfall Year Snowfall

1909–1910 126.4 1939–1940 77.8 1969–1970 120.5

1910–1911 82.4 1940–1941 79.3 1970–1971 97.0

1911–1912 78.1 1941–1942 89.6 1971–1972 109.9

1912–1913 51.1 1942–1943 85.5 1972–1973 78.8

1913–1914 90.9 1943–1944 58.0 1973–1974 88.7

1914–1915 76.2 1944–1945 120.7 1974–1975 95.6

1915–1916 104.5 1945–1946 110.5 1975–1976 82.5

1916–1917 87.4 1946–1947 65.4 1976–1977 199.4

1917–1918 110.5 1947–1948 39.9 1977–1978 154.3

1918–1919 25.0 1948–1949 40.1 1978–1979 97.3

1919–1920 69.3 1949–1950 88.7 1979–1980 68.4

1920–1921 53.5 1950–1951 71.4 1980–1981 60.9

1921–1922 39.8 1951–1952 83.0 1981–1982 112.4

1922–1923 63.6 1952–1953 55.9 1982–1983 52.4

1923–1924 46.7 1953–1954 89.9 1983–1984 132.5

1924–1925 72.9 1954–1955 84.6 1984–1985 107.2

1925–1926 74.6 1955–1956 105.2 1985–1986 114.7

1926–1927 83.6 1956–1957 113.7 1986–1987 67.5

1927–1928 80.7 1957–1958 124.7 1987–1988 56.4

1928–1929 60.3 1958–1959 114.5 1988–1989 67.4

1929–1930 79.0 1959–1960 115.6 1989–1990 93.7

1930–1931 74.4 1960–1961 102.4 1990–1991 57.5

1931–1932 49.6 1961–1962 101.4 1991–1992 92.8

1932–1933 54.7 1962–1963 89.8 1992–1993 93.2

1933–1934 71.8 1963–1964 71.5 1993–1994 112.7

1934–1935 49.1 1964–1965 70.9 1994–1995 74.6

1935–1936 103.9 1965–1966 98.3 1995–1996 141.4

1936–1937 51.6 1966–1967 55.5 1996–1997 97.6

1937–1938 82.4 1967–1968 66.1 1997–1998 75.6

1938–1939 83.6 1968–1969 78.4 1998–1999 100.5

1999–2000 63.6

2000–2001 158.7

2001–2002 132.4

Observed Data and Graphical Representation 255