Question: Pensyarah statistik anda mahu menganggarkan anggaran Selang bagi min markah untuk ujian akhir. Markah Pelajar bagi ujian statistik sebelum ini adalah bertaburan normal sisihan

akhir. Markah Pelajar bagi ujian statistik sebelum ini adalah bertaburan normal sisihan

Pensyarah statistik anda mahu menganggarkan anggaran Selang bagi min markah untuk ujian akhir. Markah Pelajar bagi ujian statistik sebelum ini adalah bertaburan normal sisihan piawai bersamaan 30.9. Dapatkan anggaran Selang keyakinan bagi taburan markah pada aras keyakinan 95% jika 30 Pelajar yang mengambil statistik telah dipilih mencatatkan min markah 74.2. o 64.92 83.48 o 13.64 134.76 0 63.14sps 85.26 o 62.6641 85.73 o 68.72 79.68

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