For example, the probability of getting a batch of tests that are $1\%$ defective from Winter Park Technology is $\mathrm{.}70.$ Because Kellogg orders $10,000$ tests per order, this would mean that there is a $\mathrm{.}70$ probability of getting $100$ defective tests out of the $10,000$ tests if Winter Park Technology is used to fill the order. A defective Breathalyzer test set can be repaired for $$0\mathrm{.}50.$ Although the quality of the test sets of the second supplier, Dayton Enterprises, is lower, it will sell an order of $10,000$ test sets for $$37$ less than Winter Park.

Based on evaluating cost, answer the following questions:

a$.$ What is the node value for Winter Park? $45$

b$.$ What is the node value for Dayton? $90$

c$.$ Based on cost$,$ which supplier should Deborah Kellogg select? Dayton