Answer:
you use disputation 
Step-by-step explanation:
4 times 3x = 12x
4 times 6 = 24 
 
        
             
        
        
        
Answer:
The company should take a sample of 148 boxes.
Step-by-step explanation:
Hello!
The cable TV company whats to know what sample size to take to estimate the proportion/percentage of cable boxes in use during an evening hour.
They estimated a "pilot" proportion of p'=0.20
And using a 90% confidence level the CI should have a margin of error of 2% (0.02).
The CI for the population proportion is made using an approximation of the standard normal distribution, and its structure is "point estimation" ± "margin of error"
[p' ±  ]
]
Where
p' is the sample proportion/point estimator of the population proportion
 is the margin of error (d) of the confidence interval.
 is the margin of error (d) of the confidence interval.

So






n= 147.28 ≅ 148 boxes.
I hope it helps!
 
        
             
        
        
        
Step-by-step explanation:
Pork sandwiches: 2 , 6 , 10 , 14 
goes by 4
Chicken Sandwiches: 5 , 15 , 25 , 35 
goes by 10