Paper 1 · Research Aptitude
UGC NET 02nd Jan 2026 Shift 1
Arrange the following intervals of standard normal variate in increasing order of probabilities.
- 1. 0 ≤ Z ≤ +1
- 2. +1 ≤ Z ≤ +2
- 3. +2 ≤ Z ≤ +3
- 4. +3 ≤ Z < +∞
A4, 3, 2, 1 ✓ Correct
B3, 2, 1, 4
C2, 1, 3, 4
D1, 2, 3, 4
Correct answer: (A) 4, 3, 2, 1 — For a standard normal curve the area, which is the probability, is largest near the centre and shrinks in the tails. The areas are about 0.3413 for 0 to 1,…
Explanation
★For a standard normal curve the area, which is the probability, is largest near the centre and shrinks in the tails. The areas are about 0.3413 for 0 to 1, 0.1359 for 1 to 2, 0.0214 for 2 to 3 and 0.0013 beyond 3. Arranged from smallest probability upward this gives the far tail first, that is 4, 3, 2, 1.
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