Answer:
4.4
Step-by-step explanation:
Quartile is 25%
From standard normal table, z-score is -0.6745
[tex]Z=\frac {X-\mu}{\sigma}[/tex] where [tex]\mu[/tex] is mean [tex]\sigma[/tex] is standard deviation which is 0.5
[tex]-0.6745=\frac {X-4.7}{0.5}[/tex]
X=4.7-0.33725=4.36275
The first quartile is approximately 4.4
