16 is correct
and so is negitive 8
Answer:

Step-by-step explanation:





8 out of 24 = 1 out of 3
5 out of 20 = 1 out of 4
1/3 is larger that 1/4
Jessica has the largest ratio
Answer: C,D
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The confidence interval estimate for the population proportion is given by :-
, where
is the sample proportion of success and ME is the margin of error.
Given : The proportion of computers that were repaired more than three times in the last two years : 
Margin of error : 
Now, the confidence interval estimate for the population mean will be :-

Hence, the 98% confidence interval estimate for the population mean using the Student's t-distribution = 