1points time remaining 34 minutes 46 seconds00: 34: 46 item 2item 2 1 points time remaining 34 minutes 46 seconds00: 34: 46 in 20x2, the robinson company switched its inventory method from fifo to average cost. inventories at the end of 20x1 were reported in the balance sheet at $22 million. if the average cost method had been used, 20x1 ending inventory would have been $20 million. the company's tax rate is 25%. the adjustment to 20x2’s beginning retained earnings would be:

The average u.s. household has $178,600 in life insurance. the standard deviation is $25,500. a local insurance agent would like to see how households in his city compare to the national average, and selects a simple random sample of 30 households from the city. for the households in the city, the average amount of life insurance is $188,800. a. based on the sample results, construct a 95% confidence interval for the true average amount of life insurance for households in the city. b. test the h0 : $178,600 ? ? to determine if the city's sample average is significantly different from the u.s. average amount of life insurance per household. use the conventional levels of significance.