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    Sample size calculation

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    You wish to estimate accurately with 95% confidence and within 3% of the true population, the proportions of television sets that need repairs or have problems by the time the product is three years old. If no preliminary estimate is available, what is the minimum sample size required?
    Please show your work so I can figure out other problems similar to this!

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    Solution Summary

    The solution gives the step by step method for calculating the sample size for estimating the population proportion.