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an glooal menyeoaD akhir tahun 2008. Diketahui IHSG pada tahun tersebut mencapai 1355. Setelah dilakukan pengamatan selama triwulan pertama tahun 2009 (90 hari) ternyata

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an glooal menyeoaD akhir tahun 2008. Diketahui IHSG pada tahun tersebut mencapai 1355. Setelah dilakukan pengamatan selama triwulan pertama tahun 2009 (90 hari) ternyata diperoleh rata-rata nilai IHSG sebesar 1570 dengan standard deviasi sebesar 120. berapakah peluang IHSG : (i). Naik sarnpai 1600, (ii). Turun dibawah 1500, (iii) antara 1500 1650.

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