A random sample of 12 items is drawn from a population whose standard deviation is unknown. The
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Question:
A random sample of 12 items is drawn from a population whose standard deviation is unknown. The sample mean isx
x= 800 and the sample standard deviation iss= 10. UseAppendix Dto find the values of Student'st.
(a)Construct an interval estimate ofwith 95% confidence.
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