A grocrey store receipts show that sunday cuetomer ourchases have a skewed distribution with a mean of 29$ and a standard deciation of 17$. Suppose the store had 310 customers this Sunday.

A) Estimate the probability that the store's revenues were the least $9,100.

B) If, on a typical sunday, the store serves 310 customers, how much does the store take in on the worst 10% of such days?