Posted by **Faith** on Tuesday, July 19, 2011 at 3:03pm.

Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 44 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that ó = 7.20 ml/kg for the distribution of blood plasma.

(a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error? (Round your answers to two decimal places.)

lower limit______

upper limit_____

margin of error_______

- Statics -
**Faith**, Tuesday, July 19, 2011 at 3:35pm
HELP PLEASE

- Statistics -
**PsyDAG**, Thursday, July 21, 2011 at 4:04pm
99% confidence interval = mean ± 2.575 SD

http://en.wikipedia.org/wiki/Margin_of_error

- Statics -
**Marie**, Tuesday, November 1, 2011 at 7:37pm
Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 41 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that σ = 7.40 ml/kg for the distribution of blood plasma.

(a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error? (Round your answers to two decimal places.)

lower limit_______

upper limit_______

margin of error________

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