Statistics

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EU (European Union) countries report that 46% of their labor force is female. The United Nations wants to determine if the percentage of women in the U.S. labor force is the same. Representatives from the United States Department of Labor plan to check a random sample of more than 10,000 employment records on file to estimate the percentage of women in the U.S. labor force.

The Department of Labor wants to estimate the percentage of women in the U.S. labor force to within ±5% with 90% confidence. How many employment records should be sampled?

  • Statistics -

    EU (European Union) countries report that 46% of their labor force is female. The United Nations wants to determine if the percentage of women in the U.S. labor force is the same. Representatives from the United States Department of Labor plan to check a random sample of more than 10,000 employment records on file to estimate the percentage of women in the U.S. labor force.

    Suppose the Department of Labor wants to be 90% confident of estimating the percentage of women in the labor force to within ±2% of the true percentage. To do this they would have to
    Select one:
    a. decrease the sample size.
    b. increase the sample size.
    c. increase the sampling error. Incorrect
    d. select the same number of employment records.
    e. decrease the precision.

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