Question

In the standard normal distribution (mean = 0, standard deviation = 1), what is the probability that a random variable falls within one standard deviation of the mean?

A 25%
B 50%
C 68%
D 95%
Practice Next

Relevant for Exams:

Hey! Ask a query

🎓
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
  • 200 Questions with Detailed Solutions
  • Section-wise Coverage (GA, English, Quant & Reasoning)