In a bag there are two $20 bills, one $10 bill, four $5 bills, and three $1 bills.
if frank picks one bill from the bag, the expected value of the bill he chooses is $. if one more $20 bill and one more $10 bill are added to the bag, the expected value will change to $.

Select the correct answer from each drop-down menu. james needs to clock a minimum of 9 hours per day at work. the data set records his daily work hours, which vary between 9 hours and 12 hours, for a certain number of days. {9, 9.5, 10, 10.5, 10.5, 11, 11, 11.5, 11.5, 11.5, 12, 12}. the median number of hours james worked is . the skew of the distribution is