The mean serum-creatinine level measured in 12 patients 24 hours after they received a newly proposed antibiotic was 1.2 mg/dL.If the mean and standard deviation of serum creatinine in the general population are 1.0 and 0.4 mg/dL, respectively, then, using significance level of .05, test whether the mean serum-creatinine level in this group is different from that of the general population.Suppose the sample standard deviation of serum creatinine in 3a is 0.6 mg/dL. Assume that the standard deviation of serum creatinine is not known. Perform a hypothesis test in 3a.Compute a two-sided 95% CI for the true mean serum-creatinine level in 3b.How does your answer to 3b relate to your answer to 3c?

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6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The mean serum-creatinine level measured in 12 patients 24 hours after they received a newly proposed antibiotic was 1.2 mg/dL.

1. If the mean and standard deviation of serum creatinine in the general population are 1.0 and 0.4 mg/dL, respectively, then, using significance level of .05, test whether the mean serum-creatinine level in this group is different from that of the general population.
2. Suppose the sample standard deviation of serum creatinine in 3a is 0.6 mg/dL. Assume that the standard deviation of serum creatinine is not known. Perform a hypothesis test in 3a.
3. Compute a two-sided 95% CI for the true mean serum-creatinine level in 3b.
4. How does your answer to 3b relate to your answer to 3c?

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