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    Weekly Income of Private Industry Information

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    subash1111@gmail.com
    The document discusses the average weekly income of private industry information workers being $777 with a standard deviation of $77. It asks for the probability that a random sample of 50 information workers will earn on average more than $800 per week. The solution calculates this probability to be 0.0174 using the normal distribution and central limit theorem, without needing to assume the population is normally distributed.

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    Weekly Income of Private Industry Information

    Uploaded by

    subash1111@gmail.com
    194 views1 page
    The document discusses the average weekly income of private industry information workers being $777 with a standard deviation of $77. It asks for the probability that a random sample of 50 information workers will earn on average more than $800 per week. The solution calculates this probability to be 0.0174 using the normal distribution and central limit theorem, without needing to assume the population is normally distributed.

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    The document discusses the average weekly income of private industry information workers being $777 with a standard deviation of $77. It asks for the probability that a random sample of 50 information workers will earn on average more than $800 per week. The solution calculates this probability to be 0.0174 using the normal distribution and central limit theorem, without needing to assume the population is normally distributed.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    194 views1 page

    Weekly Income of Private Industry Information

    Uploaded by

    subash1111@gmail.com
    The document discusses the average weekly income of private industry information workers being $777 with a standard deviation of $77. It asks for the probability that a random sample of 50 information workers will earn on average more than $800 per week. The solution calculates this probability to be 0.0174 using the normal distribution and central limit theorem, without needing to assume the population is normally distributed.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 1

    Weekly Income of Private Industry Information Workers The average weekly

    income of information workers in private industry is $777. If the standard


    deviation is $77, what is the probability that a random sample of 50 information
    workers will earn, on average, more than $800 per week? Do we need to assume
    a normal distribution? Explain.
    z

    800 777
    23

    2.11
    77
    10.889
    50

    P(z>2.11)=1-0.9826=0.0174

    No, the central limit theorem applies.

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