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    Statistics - gestation periods

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    Gestation periods of humans have a mean of 266 days and a standard deviation of 16 days. Let y denote the variable "gestation period" for humans.

    A Find the standard variable corresponding to y.
    B. What are the mean and standard deviation of the standardized variable?
    C. Obtain the z-scores for gestation periods of 227 days and 315 days. Round your answers to two decimal places.
    D. Interpret your answers in part (c).

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    Solution Summary

    This shows how to find the standard variable, mean, standard deviation, and z-scores.