Question

Question #e4ec5

Answer 1

We have that

p-hat `= 27/100 = 0.27`

The standard error is `E = 1.645*sqrt[0.27*0.73/100] = 0.0730`

Finally

90% CI: `0.27-0.0730 < p < 0.27+0.073`

90% CI: `0.1970 < p < 0.3430`