The cheapest economy tickets of Jetstar Airways (Australia) and Virgin Australia Airlines for domestic travel do not inc

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The cheapest economy tickets of Jetstar Airways (Australia) and
Virgin Australia Airlines for domestic travel do not include
checked baggage. Suppose that p1 and
p2 are the population proportions of Jetstar and
Virgin travellers, respectively, who will purchase checked baggage
when they purchase the tickets.
A Business analyst employed by a traveller magazine carries out
a survey at the Sydney domestic airport. In a random sample of 200
Jetstar domestic travellers, 120 of them purchased checked baggage.
In another independent random sample of 140 Virgin domestic
travellers, 77 of them purchased checked baggage.
Compute the upper 95% confidence bound for p2.