Question
A random sample of 30 lunch orders at Noodles & Company showed a standard deviation of $5.31. Find the 90 percent confidence interval for the
A random sample of 30 lunch orders at Noodles & Company showed a standard deviation of $5.31. Find the 90 percent confidence interval for the population standard deviation. Use Excel to obtain
2
L
=CHISQ.INV(/2,d.f.)
L2=CHISQ.INV(/2,d.f.)and
2
U
=CHISQ.INV.RT(/2,d.f.)
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Statistics For Business And Economics
Authors: James T. McClave, P. George Benson, Terry Sincich
13th Edition
134506596, 978-0134506593
