Question

An airline stewardess randomly chose 25 passengers on a transatlantic flight and asked them if they liked the new entertainment system. Twenty-one of those surveyed said yes. If there are 231 passengers in all, about how many would you expect to say that they liked the new entertainment system?

Answer 1

A. 119
B. 147
C. 194
D. 210

Answer 2

We see that 21 of the 25 people surveyed liked the new system. Thus, we can estimate that 21/25, or 84%, of people will like it.

Then we can expect that about 84% of the 231 passengers would say they liked the system.
0.84*231 = 194.04, so we'd expect about 194 people to be in favor.

Answer 3

Thank You

Answer 4

No problem!