For the data on the number of Android apps in Exercise 19 of Section 22.1, find the percent of the data that lie within one, two, and three standard deviations of the mean. Compare these percentages with the ones in the empirical rule.

Data from Exercise 19 of Section 22.1.

In a random sample, 30 Android users were asked to record the number of apps that were installed on their phone. The resulting data are shown below:

Make a stem-and-leaf plot of these data (without split stems).

112, 91, 101, 85, 76, 115, 93, 126, 78, 86, 105, 107, 58, 86, 109, 111, 103, 105, 97, 110, 92, 95, 107, 89, 101, 67, 103, 99, 93, 82