8- The Springfield Playground Committee is planning to sell promotional t-shirts in an effort to raise money toward building a new playground for the town. The shirts will cost the committee $6.00 each and will be priced at $15.00 before the grand opening of the playground; any shirts sold after that will be priced at $6.00. The chair of the finance committee estimates that the probability distribution for sales up to and including the grand opening is normally distributed with a mean of 250 and a standard deviation of 75. How many shirts should the committee order if the shirts must be ordered in bundles of 10?