Since there is no mean, we need to first get the probability:
p = 11/ 65 = 0.1692
This will make it easier to compute for the interval estimate. Interval Estimate = probability ± margin of error
upper limit = 0.1692 + 0.025 = 0.1942
lower limit = 0.1692 - 0.025 = 0.1442
So the interval estimate is 0.1442 < x < 0.1942
Answer: 900 boxes
Step-by-step explanation: When you take 9,000 and divide it by the number of books in a box(10) you get 900
If you were born in 1925 you would be 42 years old in 1967
1967 - 1925 = 42