Question

For a normal curve, what percentage of values falls beyond two standard deviations from the mean?
A 5.55%
B 4.55%
C 10.55%
D 12.55%
E 13.11%

They didn't teach me this in pre-cal.

Answer 1

2 standard deviations encompasses the middle 95.45% of the graph (roughly).
100-95.45 = 4.55
B.
For normal curve problem, it essentially boils down to reading a graph.

Answer 2

*problems. typo but whatever.

Answer 3

It was just confusing without a graph, thank you!