Normal Distribution Problem. Red Blood Cell Counts are expressed millions per cubic millimeter of whole blood. For healthy females, x has a approximately normal distribution with mu = 4.8 and sigma =.3. Note: my probabilities are exact probabilities. Solutions using the standard normal table will be close.
What is the probability that a healthy female has a red blood count between 3.9 and 5.0?
a) .4787
b) .7248
c) .2475
d) .7462
Solution :
Given that ,
mean = = 4.8
standard deviation = = 0.3
P(3.9< x < 5.0) =P[(3.9 - 4.8) /0.3 < (x - ) / < (5.0 - 4.8) /0.3 )]
= P(-3 < Z < 0.6667)
= P(Z <0.6667 ) - P(Z <-3 )
Using z table,
= 0.7475 - 0.0013
answer= 0.7462
Normal Distribution Problem. Red Blood Cell Counts are expressed millions per cubic millimeter of whole blood....
Normal Distribution Problem. Red Blood Cell Counts are expressed millions per cubic millimeter of whole blood. For healthy females, x has a approximately normal distribution with mu = 4.8 and sigma =.3. Note: my probabilities are exact probabilities. Solutions using the standard normal table will be close. What is the probability that a healthy female has a red blood count between 3.9 and 5.0? .4787 .2475 .7248 .7462
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