Question

For the following data set, calculate the percentage of
data points that fall within one standard deviation of the
mean, and compare the result to the expected
percentage of a normal distribution.
{55, 54, 66, 38, 53, 56, 57, 66, 45, 65}
50%; This percentage is lower than expected in a
normal distribution.
60%; This percentage is lower than expected in a
normal distribution.
70%; This percentage is close to the expected
percentage in a normal distribution.
80%; This percentage is higher than expected in a
normal distribution.

Answer 1

doesn't only 6 fall into that range