The following data gives the lifetime in minutes, recorded to the nearest

tenth of a minute, of 50 sprayed insects.

1.2 2.2 0.7 3.9 1.7 1.9 1.4 1.8 2.0 4.3

2.5 0.9 3.4 2.8 3.7 3.5 0.4 2.8 1.1 0.2

3.9 6.3 2.5 2.1 1.3 2.1 0.3 0.4 2.4 2.1

3.5 2.9 1.2 5.3 1.7 2.7 1.8 4.8 3.2 1.6

2.6 1.8 2.3 1.3 3.1 1.5 2.6 5.9 2.0 2.3

Using 8 intervals with the lowest starting at 0.1, make a grouped frequency

distribution.