Question

choose the correct answer. given the mean of a data set is 7 and the standard deviation is 2, where will about 68% of the data lie? 5 to 9 1 to 2 9 to 10

Explanation:

Step1: Recall the empirical rule

For a normal - distributed data set, about 68% of the data lies within 1 standard deviation of the mean.

Step2: Calculate the lower and upper bounds

The lower bound is the mean minus the standard deviation: $7 - 2=5$. The upper bound is the mean plus the standard deviation: $7 + 2 = 9$.

Answer:

5 to 9