Help 6
55, 54, 66, 38, 53, 56, 57, 66, 45, 65
Mean = 55.5
Std Dev = 8.6
Scores falling within 1 Std Dev from the mean are between
55.5 - 8.6 and 55.5 + 8.6 =
46.9 and 64.1
6 fall within 1 Std Dev = 60%
We expect 68%
So...."B" is correct
