Mathematics

9th

grade

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S3期望值

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7 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    雞蛋壞掉的概率是0. 01,試估計在3000隻蛋中,好蛋的數目是多少?

    30

    300

    2970

    2700

  • 2. Multiple Choice
    30 seconds
    1 pt

    一隻蛋是壞的概率是0. 02,試估計在5000隻蛋中,壞蛋的數目是多少?

    0.02

    1000

    100

    10

  • 3. Multiple Choice
    1 minute
    1 pt

    擲一枚硬幣,正面可得10元,反面可得20元,則擲一枚硬幣得到的金額期望值為?

    10

    15

    20

    25

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