Thesamples:(9,11),xˉ=10(9,13),xˉ=11(9,15),xˉ=12(9,17),xˉ=13(9,19),xˉ=14(11,13),xˉ=12(11,15),xˉ=13(11,17),xˉ=14(11,19),xˉ=15(13,15),xˉ=14(13,17),xˉ=15(13,19),xˉ=16(15,17),xˉ=16(15,19),xˉ=17(17,19),xˉ=18P(xˉ=10)=151P(xˉ=11)=151P(xˉ=12)=152P(xˉ=13)=152P(xˉ=14)=153=51P(xˉ=15)=152P(xˉ=16)=152P(xˉ=17)=151P(xˉ=18)=151Exˉ=10⋅151+11⋅151+12⋅152+13⋅152+14⋅51+15⋅152+16⋅152+17⋅151+18⋅151=14
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