=+4.13 An experiment to study the lifetime (in hours) for a certain type of component involved putting 10 components into operation and observing them for 100 hr. Eight of the components failed during that period, and those lifetimes were recorded. The lifetimes of the two components still functioning after 100 hr are recorded as 1001.

The resulting sample observations were 48 79 1001 35 92 86 57 1001 17 29