Answer: 
Step-by-step explanation:
Given : Sample size : n=69
Sample mean : 
Standard deviation : 
Significance level : 
Then , Critical value : 
The formula to confidence interval is given by : -

Hence, the 95% confidence interval for the number of chocolate chips per cookie for big chip cookies= 
It’s pretty simple :)
All you have to do is take the width 1/6 times it by the length 1/2 and then times that by the height 1/3 and that gets you 1/36yd^2
Answer:
I think it's 4y
Step-by-step explanation:
I think it's 4y is because if y = 0 they all work but 4y which is 0 while all the others are 4