With reference to the interrequest time data on page 29 , obtain \(95 \%\) tolerance limits on the proportion \(P=0.90\) of the population of interrequest times. Take logs, use the normal theory approach, and then transform back to the original scale.

Data From Page 29

EXAMPLE 7 A density histogram has total area | Compressive strength was measured on 58 specimens of a new aluminum alloy un- dergoing development as a material for the next generation of aircraft. 66.4 67.7 68.0 68.0 69.2 69.3 69.3 70.0 70.1 70.2 71.0 71.1 71.2 71.9 72.1 72.2 74.2 74.5 75.3 68.3 68.4 68.6 68.8 68.9 69.0 69.1 69.5 69.5 69.6 69.7 69.8 69.8 69.9 70.0 70.3 70.3 70.4 70.5 70.6 70.6 70.8 70.9 71.3 71.3 71.5 71.6 71.6 71.7 71.8 71.8 72.3 72.4 72.6 72.7 72.9 73.1 73.3 73.5