I believe the answer is C 1,300
It takes at least 12 hours for the newer machine to make 10,000 cans
Answer:
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Step-by-step explanation:
Answer: (0.120,0.160)
Step-by-step explanation:
Given : Sample size : 
Number of disks were not defective =701
Then , the number of disks which are defective = 
Now, the proportion of disks which are defective : 
Significance level : 
Critical value : 
The confidence interval for population proportion is given by :-

Hence, the 90% confidence interval for the population proportion of disks which are defective = (0.120,0.160)