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Posted by on Thursday, May 10, 2012 at 8:45am.

Suppose that 98% of your customers in your market have internet access and you select a random sample of 500 customers. What is the standard error of the proportion of customers who don’t have internet access?
I seem to be struggling with no standard deviation listed

  • statistics - , Thursday, May 10, 2012 at 6:59pm

    Standard deviation = √npq = √(500 * .98 * .02) = ?
    (Note: q = 1 - p)

    I'll let you finish.

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