A national survey showed that Hillshire Farm Deli Select cold cuts were priced, on the average, at $5.20 per pound. Suppose a national survey of 23 retail outlets was taken and the price per pound of Hillshire Farm Deli Select cold cuts was ascertained. If the following data represent these prices, what is a 90% confidence interval for the population variance of these prices?

Assume prices are normally distributed in thepopulation.

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5.18 5.22 5.25 5.19 5.30 5.17 5.15 5.28 5.20 5.14 5.05 5.19 5.26 5.23 5.19 5.22 5.08 5.2 5.24 5.33 5.22 5.19 5.19