Assume that human body temperature are
normally distributed with a mean 98.21 F
and a standard deviation of 0.61F
a)A hospital uses 100.6 as the lowest
temperature considered to be a fever. What
percentage of normal and healthy persons
would be considered to have a fever. Does
this percentage suggest that a cut off of 100.6 F is appropriate?
b) Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature, be if we only 5.0 of healthy people to exceed it.(Such a result is a false positive, meaning that
the test result is positive, but the subject is not really sick.
a) Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Do you consider it appropriate?
b) It would help if you proofread your questions before you posted them. Only “5.0 of healthy people”? Five people out of how many?posted by PsyDAG
ISKposted by ALEX