Respuesta :

amna04352

Answer:

A: 68.3

B: 95.4

C: 99.7

Step-by-step explanation:

A: within 1 sd

2(.8413) - 1

0.6826

68.26%

B: within 2sd

2(.9772) - 1

0.9544

95.44%

C: within 3sd

2(.9986) - 1

0.9972

99.72%