March 29, 2017

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A researcher found a sample proportion of 0.94 for estimating the population proportion of freshmen at a university who had Facebook accounts. If the standard deviation of the sampling distribution of the sampling proportion is 0.02, what is a 95% confidence interval for the population proportion?

  • Statistics - ,

    Formula with your data:

    CI95 = 0.94 ± 1.96(0.02)

    Note: ± 1.96 represents 95% confidence interval using a z-table.

    I let you take it from here to calculate the interval.

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