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4.11: Sura ya ufumbuzi (Mazoezi + Kazi ya nyumbani)

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    179982

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    1.

    \ (\ UkurasaIndex {6}\) “>
    \(x\)\(P(x)\)
    00.12
    10.18
    20.30
    30.15
    40.10
    50.10
    60.05
    Jedwali\(\PageIndex{6}\)

    3.

    0.10 + 0.05 = 0.15

    5.

    1

    7.

    0.35 + 0.40 + 0.10 = 0.85

    9.

    1 (0.15) + 2 (0.35) + 3 (0.40) + 4 (0.10) = 0.15 + 0.70 + 1.20 + 0.40 = 2.45

    11.

    \ (\ UkurasaIndex {7}\) “>
    \(x\)\(P(x)\)
    00.03
    10.04
    20.08
    30.85
    Jedwali\(\PageIndex{7}\)

    13.

    Hebu idadi\(X =\) ya matukio ya Javier kujitolea kwa kila mwezi.

    15.

    \ (\ UkurasaIndex {8}\) “>
    \(x\)\(P(x)\)
    00.05
    10.05
    20.10
    30.20
    40.25
    50.35
    Jedwali\(\PageIndex{8}\)

    17.

    1 — 0.05 = 0.95

    18.

    \(X =\)idadi ya majors biashara katika sampuli.

    19.

    2, 3, 4, 5, 6, 7, 8, 9

    20.

    \(X =\)nambari inayojibu “ndiyo”

    22.

    0, 1, 2, 3, 4, 5, 6, 7, 8

    24.

    5.7

    26.

    0.4151

    28.

    \(X =\)idadi ya freshmen waliochaguliwa kutoka utafiti mpaka mmoja alijibu “ndiyo” kwamba wanandoa wa jinsia moja wanapaswa kuwa na haki ya hali ya kisheria ya ndoa.

    30.

    1,2,...

    32.

    1.4

    35.

    0, 1, 2, 3, 4,...

    37.

    0.0485

    39.

    0.0214

    41.

    \(X =\)idadi ya vijana wa Marekani ambao hufa kutokana na majeraha ya magari kwa siku.

    43.

    0, 1, 2, 3, 4,...

    45.

    Hapana

    48.

    1. 50.
      1. 53.

        \(X =\)idadi ya wagonjwa wito katika kudai kuwa na homa, ambao kwa kweli kuwa na homa.

        55.

        0.0165

        57.

        1. 59.

          4. 4.43

          4

          63.

          • 65.
            1. 67.
              1. 69.
                1. 71.
                  1. 73.
                    1. Kielelezo\(\PageIndex{4}\)
                    2. 75.
                      1. 77.
                        1. 79.

                          0, 1, 2, na 3

                          1. 82.
                            1. 84.

                              Hebu idadi\(X =\) ya balbu zisizofaa katika kamba.

                              • Kutumia usambazaji wa binomial:
                                • Poisson makadirio ni nzuri sana-tofauti kati ya probabilities ni tu\(0.0026\).

                                  86.

                                  1. 88.
                                    1. 90.
                                      1. 92.
                                        1. 94.

                                          4