Given: \(s=1\)

The Empirical Rule or (68-95-99.7 rule) tells us: Approximately 68% of the observations are within 1 standard deviation of the mean.

Approximately 95% of the observations are within 2 standard deviations of the mean.

Approximately 99.7% of the observations are within 3 standard deviations of the mean.

By the empirical rule, about 95% of the data. values are within two standard deviations of the mean.

About 95% of the actual y-values are within 2s of the predicted y-values (due to the fact that the errors have approximately a, normal distribution with standard deviation s).

\(d=2 s=2(0.1)=0.2\)