Question

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

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.† Over a period of months, an adult male patient has taken thirteen blood tests for uric acid. The mean concentration was x = 5.35 mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with σ = 1.81 mg/dl.

Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error? (Round your answers to two decimal places.)

lower limit    
upper limit    
margin of erro

Homework Answers

Answer #1

Solution :

Given that,

Sample size = n = 13

Z/2 = 1.96

Margin of error = E = Z/2* ( /n)

= 1.96 * (1.81 / 13)

Margin of error = E = 0.98

At 95% confidence interval estimate of the population mean is,

- E < < + E

5.35 - 0.98 < < 5.35 + 0.98

4.37 < < 6.33

lower limit: 4.37

upper limit: 6.33

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