Question: Over a period of months, an adult male patient has taken 8 blood test for uric acid. The mean concentration was ?x= 5.35mg/dl. The distribution 1.85 mg/dl.

a. find 95% confidence interval for the population mean concentration of uric acid in this patient’s blood. What is the margin of error?

b. What conditions are necessary for your calculations?

c. Give a brief interpretation of your results in the context of this problem.

d. find the sample size necessary for a 95% confidence level with a maximal error of estimate E = 1.10 for the mean concentration of uric acid in this patient’s blood.