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Q.1 15. એક પ્રામાણ્ય ચલનું વિતરણ $N(20, 4)$ વડે દર્શાવવામાં આવે છે, તો તેમાં 99.73 % અવલોકનો નીચેના પૈકી કઈ સીમામાં હશે ?

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Q.2 પ્રામાણ્ય વિતરણમાં 99 % અવલોકનો સામાન્ય રીતે નીચેના પૈકી કઈ સીમામાં હોય છે ?

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Q.3 10 પ્રમાણિત પ્રામાણ્ય ચલ માટે ચતુર્થક વિચલનની અંદાજિત કિંમત નીચેના પૈકી કઈ છે ?

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Q.4 એક પ્રામાણ્ય ચલ X કે જેનો મધ્યક μ અને પ્રમાણિત વિચલન σ છે, તો તેના માટે પ્રમાણિત પ્રામાણ્ય ચલ Z નીચેના પૈકી કયો થશે ?

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Q.5 9 પ્રામાણ્ય ચલ માટે સરેરાશ વિચલનની અંદાજિત કિંમત નીચેના પૈકી કઈ છે ?

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Q.6 પ્રમાણિત પ્રામાણ્ય ચલનો મધ્યક અને વિચરણ નીચેના પૈકી કયાં છે ?

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Q.7 1. નીચેના પૈકી $\mu$ મધ્યક $\sigma$ પ્રમાણિત વિચલનવાળા પ્રામાણ્ય ચલ $X$ નું સંભાવના ઘટત્વ વિધેય કયું છે ?

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Q.8 પ્રામાણ્ય વક્ર નીચેનું કુલ ક્ષેત્રફળ નીચેના પૈકી કયું હોય છે ?

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Q.9 13. પ્રામાણ્ય વિતરણના પ્રાપ્તાંકોમાં જો $x=25$, $\mu=20$ અને $\sigma=5$ હોય, તો પ્રમાણિત પ્રામાણ્ય પ્રાપ્તાંકની કિંમત નીચેના પૈકી કઈ થશે ?

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Q.10 12 એક પ્રામાણ્ય વિતરણ માટે સરેરાશ વિચલનની અંદાજિત કિંમત 20 છે, તો તે વિતરણના ચતુર્થક વિચલનની કિંમત નીચેના પૈકી કઈ થશે ?