F AN INDIVIDUAL. SUPPOSE THAT A RANDOM SAMPLE OF 45 MALE FIREFIGHTERS ARE TESTED AND THAT THEY HAVE A PLASMA VOLUME SAMPLE MEAN OF 37.5ML/KG WITH A STANDARD DEVIATION OF 7.50ML/KG.
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 45 MALE FIREFIGHTERS ARE TESTED AND THAT THEY HAVE A PLASMA VOLUME SAMPLE
1) Find a 95% confidence interval for the mean blood plasma volume in male firefighters. Interpret
the interval.
2) The Chief Scientist at the lab wants the estimation of the mean blood plasma volume to be correct
to within 1 unit of the true mean with 95% probability. How many additional firefighters have to
be sampled in order to achieve this estimation accuracy?
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