Overproduction of uric acid in the body can be an indication of cell breakdown.

Question

Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma (Reference: Manual of Laboratory and Diagnostic Tests by F. Fischbach). Over a period of months, an adult male patient has taken eight blood tests for uric acid. The mean concentration was  = 5.35mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with standard deviation of 1.85mg/dl. What is the margin of error at the 5% significance level? Round your answer to 2 decimal places X.XX and enter a real number only.

Explanation / Answer

here for std error =std deviation/(n)1/2 =1.85/(8)1/2 =0.6541

for 5% significance level ; crtiical value of z =1.96

hence  margin of error =z*std error =1.28

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