In an online retailer, 76 % of all orders are shipped within 12 hours of being received. The probability that in a random sample of 100 orders more than 77 were shipped within 12 hours is equal P( Z > a). Find a.It is known that 47 % of the people who inquire about investment opportunities at a brokerage house end up purchasing stock, and 40% end up purchasing bonds. It is also known that 30% of the inquirers end up getting a portfolio with both stocks and bonds. A person is selected at random from those who make inquiries. What is the probability that she or he will get stocks or bonds or both