Question: Did you mean: a journal article reported that the mean hospital stay following a particular surgical procedure in 2019 was 7.1 days. A researcher feels

Did you mean: a journal article reported that the mean hospital stay following a particular surgical procedure in 2019 was 7.1 days. A researcher feels that the mean hospital stay in 2019 should be less due to initiatives aimed at reducing health care costs. A random sample of 40 patients undergoing the same surgical procedure in 2019 had a mean length of stay 0f 6.85 days with standard deviation of 7.01 days 1 days

Claculate the appropriate test at the 5% level of significance . decide on 1 tail or 2 tail test based on the goals of the research

what is The value of the calculated test statistic ?

What isThe critical value

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