probability is about .95 that the 95% confidence interval will include the true population parameter. On the other hand, 2.5% of the time the highest value in the confidence interval will be smaller than the true value, while 2.5% of the time the smallest value in the confidence interval will be greater than the true value.
Set prices with room to move. Most people expect prices at garage sales to be just the starting price and are about 25% to 50% above the seller's (ie your) bottom-line price to allow for negotiating. The amount depends on the condition of the item and how much you are prepared to haggle.
Like commissions paid on gross profit, revenue commissions are often used in combination with other compensation forms. Found most often in auto sales, placement fees give a set amount for each unit sold. Say you sell cars. If you are paid $300 for each car, that $300 is considered a placement fee. Placement fees are often added as additional bonuses in comp plans and serve to enhance other commissions that can be earned by sales professionals.