suppose quarterly sales levels among healthcare info systems companies are approximately normally distributed with a mean of $8 million and a standard deviation of $1.2 million. one health care information systems company considers a quarter a "failure ". if its sales level that quarter is in the bottom 15% of all quarterly sales levels. determine the sales in millions of dollars that is the cut off between sales that are considered failures and ones that are not. round final answer to 1 decimal place