A company sold 3,000 computers in one month, but 12 were returned. If 3,500 were sold the next month, the company would expect 1
4 to be returned.
What is a valid proportion to represent the problem?
What is a valid proportion to represent the problem?
2 answers:
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Answer: a) 0.84 b) 0.67 c) 1.28
Step-by-step explanation:
Using the standard normal distribution table for z-value , we have
(a) The value of would result in a 80% one-sided confidence interval :
(b) The value of would result in a 85% one-sided confidence interval :
(c) The value of would result in a 90% one-sided confidence interval :