I have a business making fancy lotions that I bottle in containers that hold a maximum of 4.1 ounces. I advertise my lotions to be 4 ounces. Certainly, as my work is done by hand, the EXACT amount in each container will vary a bit. I carefully measure the exact amount in 105 of my containers and find the mean amount in the 105 containers to be 4.034 ounces with a standard deviation of 0.022 ounces. The data also is approximately normally distributed. 90% of my customers will actually get at least how many ounces of lotion