Accounting procedures allow a business to evaluate its inventory costs based on two methods: LIFO $($last in first out$)$ or FIFO $($first in first out$).$ A manufacturer evaluated its finished goods inventory $($in $$000$s$)$ for five products with the LIFO and FIFO methods. To analyze the difference, they computed FIFO $$ LIFO for each product. We would like to determine if the LIFO method results in a lower cost of inventory than the FIFO method. The company wishes to test this hypothesis at the $0\mathrm{.}05$ level of significance.

Product FIFO $($F$)$ LIFO $($L$)$

$1227216$

$2122102$

$3100113$

$4212201$

$5250245$

What is the value of the test statistic?

Multiple Choice

$+0\mathrm{.}77$

$\backslash$pm $3\mathrm{.}080$

$+1\mathrm{.}237$

$+2\mathrm{.}436$