(a) Approximately what proportion of healthy children have left atrial diameters less than 24 mm?
Answer :
Given :
Given Data :
The population mean $(μ) = 26.7$
The population standard deviation $(σ) = 4.2$
Solution :
A) The Proportion of Children with Left Atrial Diameters Less Than 24 mm :
$$\therefore \text{P}(x < 24) = \text{P}\left(\frac{x – \mu}{\sigma} < \frac{24 – 26.7}{4.2}\right) \\$$ $$= \text{P}(z < -0.64) \\$$ $$= 0.2611$$
