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hw10_sol - Problem 1 L ‘11 1"“ 1 3 ‘5 W5...

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Unformatted text preview: Problem 1 L ‘11:: ;: 1"“ 1+3: ‘5' W5 _ %' 3"” ...-» fi '1 '5 ,1 F I?) fir-(3) %‘ 1' Ln ,3, 3 L1 -=~ £1fo =: 33sz (W75) :— ....---L""'"- I 3'70 Problem 2 Problem 3. 5.98 .' Problem 4. Problem 5 a) aux + Yfl = and + ZXY + W] = 5{X=] + 2£[XY] + gm] £[(X + Y)’] — £[X + Y]: 5W] + 2£[XY] + 5m] — .1quI ~25[X]5[Y] *- 5W1“ VAR[X] + VARlY] + 2[£[XY] — amen/1] b) VAR[X.+ Y] c) VAR[X + Y} = VARDK'J + VARD’] if 8115’] = spasm that is, if X rand Y are II M p 1? n i. + n in“ I m 1' {at [I Problem 1 ELY]: O 'jw FF- 2- .3.- EM]:- -m>.a; —~L~ 7:. *3”) Mn ) H {I rag—t 3 i) 4— 2(2)}; =0 "'31? ”(MY om- wb’cosmml CWCKN) .-.~. 61311—5335ij ....-c3 fiXM‘Fa-Q. WWW ‘PL7<=£ 4:31 7! 911:3)qu 3] J Problem 9. ...
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