Anvils Works' requlres, on average, $2,500$ tons of aluminum each week, with a standard deviatlon of $800$ tons. The lead tlme to

recelve its orders is uarr weeks. The holding cost for one ton of aluminum for one week is $$11.$ It operates with a $0\mathrm{.}98$ in$-$stock probability.

a$.$ On average, how many tons does it have on order?

Note: Round your answer to nearest integer.

Answer is complete and correct.

Tons

$27,500$

b$.$ On average, how many tons does it have on hand?

Note: Round your answer to nearest integer.

Answer is complete but not entirely correct.

Tons

c$.$ If Its average Inventory was $8,500$ tons, what would be its average holding cost per week?

Note: Round your answer to nearest integer.

Answer is complete and correct.

Average holding cost per week

$83,500$

d$.$ If Its average Inventory was $9,000$ tons, what would be its average holding cost per ton of aluminum?

Note: Round your answer to $2$ decimal places.

Answer is complete but not entirely correct.

Average holding cost per ton

$$99,000\mathrm{.}00$

e$.$ Suppose Its on$-$hand Inventory is $5,050$ tons, on average. What In$-$stock probability does It offer to Its customers? Hint: use the

$=$ NORM.S$.$DIST $(z,1)$ Excel function.

Note: Do not round intermedlate calculations or your z value. Round your final answer to $4$ decimal places.

Answer is complete but not entirely correct.