China Naming Network - Eight-character query< - The historical weather statistics of Hengshui (2011-01-01 to 2014-03-01) can be found from the weather website as follows: From 2011-01-01 to 2014-03-01, Hengshui
The historical weather statistics of Hengshui (2011-01-01 to 2014-03-01) can be found from the weather website as follows: From 2011-01-01 to 2014-03-01, Hengshui
(Ⅰ) Suppose A represents the event "rain and snow day", B represents the event "non-rain and snow day", and C represents the event "taxi to work",
P (C) =P(AC)+P(BC)
=P(A)P(C/A)+P(B)P(C/B)?…(2 points)
< p>=194+361128×12+(1?194+361128)×10%≈0.2×0.5+0.8×0.1=0.18. …(4 points)(II) The possible values of -194+361128)×90%≈0.8×0.9=0.72,
P（X=2）=194+361128×12≈0.2×0.5=0.1,
P（ ( 10 points)
The distribution of ∴X is as follows
…(12 points)