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    Confidence interval problem

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    Dr. Patton is a Professor of English. Recently he counted the number of misspelled words in a group of student essays. For his class of 40 students, the mean number of misspelled words was 6.05 and the standard deviation 2.44 per essay. Construct a 95 percent confidence interval for the mean number of misspelled words in the population of student essays.

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    https://brainmass.com/statistics/confidence-interval/confidence-interval-problem-62865

    Solution Preview

    In this question,
    N = 40
    M = 6.05
    SD = 2.44
    we use two-tailed 95% t value with ...

    Solution Summary

    Solution provides clear example on how to construct a confidence interval for the mean number of misspelled words in a collection of student essays.

    $2.19

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