Asked by hassan
A study of 60 bolts of carpet showed that their average length was 180 yards. The standard deviation of the population is 6 yards. Which of the following is the 99% confidence interval for the mean length per bolt of carpet?
Answers
Answered by
PsyDAG
No alternatives given. Cannot copy and paste here.
99% = mean ± 2.575 SEm
SEm = SD/√n
You do the math.
99% = mean ± 2.575 SEm
SEm = SD/√n
You do the math.
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