If X∼N(10,4)X \sim N(10, 4)X∼N(10,4), find P(X<8)P(X < 8)P(X<8). (Given Φ(1)≈0.8413\Phi(1) \approx 0.8413Φ(1)≈0.8413)
0.1587
0.8413
0.5
0.3413