Answer :
Given information :
The z-score =1.54
The population standard deviation $(σ) = 2$
Solution :
→ The population mean $(\mu)$ :
$$\therefore z = \frac{X – \mu}{\sigma} \quad$$ $$\therefore 1.54 = \frac{37.4 – \mu}{2} \quad$$ $$\therefore \mu = 34.32$$
