Question

Area between - 1.96 in a normal distribution is
a) 95.45% b) 95% c) 96% d) 99%​

Answer 1

Answer:

b) 95%

Step-by-step explanation:

The area from -1.96 to +1.96 would encompass 2*0.475 or 95% of the area under a normal curve, leaving 5% outside those limits or 5% in the tails. Note that we commonly think of a 95% range as the mean plus or minus 2z or 2 SD, but that's an approximation and the exact z-score should be 1.96.