Mathematics, 15.04.2021 21:50 alove1777

A survey of hospital records of 35 randomly selected patients suffering from a particular disease indicated that the average hospital stay was 10 days. If the mean hospital stay is between 9.032 and 10.97 days with a standard deviation of 2.9 days, approximately which confidence level does the range represent? Estimate the z-score to the nearest thousandth and use it to determine the confidence level.

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