It is known that a laboratory task takes the average person 2.5 seconds. A researcher was interested in whether older people are slower (take longer) on this task. The researcher tested 30 randomly selected 80-year-olds. Their mean time was 2.7 seconds, with an estimated population standard deviation of 1.4 seconds. What should the researcher conclude (use the .05 level)? a. /2 Identify the populations involved:
population 1 =
population 2 =
b. /2 State the research and null hypothesis:
Research Hypothesis =
Null Hypothesis =

c. /6 Determine the characteristics of the comparison distribution (hint: it is a distribution of means):

mean of the distribution of means =

degrees of freedom =

estimated population variance =

estimated population standard deviation =

variance of the distribution of means =

standard deviation of distribution of means =

d. /1 Cutoff sample score on the comparison distribution at which we’ll reject H0 (hint: 1 or 2 tails?) =

e. /1 Determine your sample’s score on the comparison distribution =

f. /1 Accept or reject the null hypothesis?

g. /4 Sketch the distributions involved:

Required information [the following information applies to the questions displayed below.] the following data is provided for garcon company and pepper company. garcon company pepper company beginning finished goods inventory $ 13,800 $ 18,850 beginning work in process inventory 16,700 20,700 beginning raw materials inventory 8,800 13,500 rental cost on factory equipment 28,250 26,650 direct labor 22,400 37,400 ending finished goods inventory 17,300 14,300 ending work in process inventory 23,200 19,400 ending raw materials inventory 5,900 9,600 factory utilities 11,250 15,000 factory supplies used 10,900 5,700 general and administrative expenses 32,500 44,500 indirect labor 2,500 9,880 repairs—factory equipment 4,820 2,150 raw materials purchases 41,500 63,000 selling expenses 54,800 49,000 sales 238,530 317,510 cash 33,000 23,700 factory equipment, net 222,500 124,825 accounts receivable, net 13,400 23,950 required: 1. complete the table to find the cost of goods manufactured for both garcon company and pepper company for the year ended december 31, 2017. 2. complete the table to calculate the cost of goods sold for both garcon company and pepper company for the year ended december 31, 2017.

5. profit maximization and shutting down in the short run suppose that the market for polos is a competitive market. the following graph shows the daily cost curves of a firm operating in this market. 0 2 4 6 8 10 12 14 16 18 20 50 45 40 35 30 25 20 15 10 5 0 price (dollars per polo) quantity (thousands of polos) mc atc avc for each price in the following table, calculate the firm's optimal quantity of units to produce, and determine the profit or loss if it produces at that quantity, using the data from the previous graph to identify its total variable cost. assume that if the firm is indifferent between producing and shutting down, it will produce. (hint: you can select the purple points [diamond symbols] on the previous graph to see precise information on average variable cost.) price quantity total revenue fixed cost variable cost profit (dollars per polo) (polos) (dollars) (dollars) (dollars) (dollars) 12.50 135,000 27.50 135,000 45.00 135,000 if the firm shuts down, it must incur its fixed costs (fc) in the short run. in this case, the firm's fixed cost is $135,000 per day. in other words, if it shuts down, the firm would suffer losses of $135,000 per day until its fixed costs end (such as the expiration of a building lease). this firm's shutdown price—that is, the price below which it is optimal for the firm to shut down—is per polo.

An outside manufacturer has offered to produce 60,000 daks and ship them directly to andretti's customers. if andretti company accepts this offer, the facilities that it uses to produce daks would be idle; however, fixed manufacturing overhead costs would be reduced by 75%. because the outside manufacturer would pay for all shipping costs, the variable selling expenses would be only two-thirds of their present amount. what is andretti's avoidable cost per unit that it should compare to the price quoted by the outside manufacturer?