Answer: (0.541, 0.819)
Explanation:
The confidence interval for proportion is given by :-

Given : The proportion of children attended the school =

Significance level :

Critical value :

Now, the 99% z ‑confidence interval for proportion will be :-

Hence, the 99% z ‑confidence interval for p, the proportion of all children enrolled in kindergarten who attended preschool = (0.541, 0.819)