Answer:
since numerator does not change for this equation, just put x+5=30 which is 25
Step-by-step explanation:
This doesn’t include the Einstein problem cause I didn’t have that one.
Answer: 
Step-by-step explanation:
Given : Significance level : 
Critical value : 
Sample size : n=1305
The proportion of tenth graders read above the eighth grade level. =
The confidence interval for population proportion is given by :-

Hence, the 99% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.771,0.829) .
Answer: A.
Step-by-step explanation:
Hope this helps!