A manufacturer purchased and installed a shrink-wrap machine 4 years ago at a cost of $4,000. A new machine is now needed, and one is available for $7,000 less a $1,000 trade-in allowance for the old machine. The market value of the old machine without trade-in on a new model is $500. Which of the four dollar values above is a sunk cost that is irrelevant in a pre-tax engineering economic analysis? Choose an answer by clicking on one of the letters below, or click on "Review topic" if needed. A. $500B. $1,000C. $4,000D. $7,000

The food services division of cedar river amusement park inc. is studying the amount families who visit the amusement park spend per day on food and drink. a sample of 40 families who visited the park yesterday revealed they spent the following amounts: see worksheet 1 for data and answer the following questions: a. organize the data into a frequency distribution, using seven classes and 15 as the lower limit of the first class. what class interval did you select? b. what percent of families spent less than $45? c. what percent of families spent $55 or more? d. how many families spent from $65 to 74.99?