Here are the comparative income statements of Ivanhoe Corporation. IVANHOE CORPORATION Comparative Income Statement For the Years Ended December 31 2022 2021 Net sales $624,100 $523,300 Cost of goods sold 462,100 405,800 Gross Profit 162,000 117,500 Operating expenses 72,300 44,300 Net income $ 89,700 $ 73,200 (a) Prepare a horizontal analysis of the income statement data for Ivanhoe Corporation, using 2021 as a base. (If amount and percentage are a decrease show the numbers as negative, e. g. -55,000, -20% or (55,000), (20%). Round percentages to 1 decimal place, e. g. 12.1%.)

Acompany is developing a new high­performance wax for cross country ski racing. in order to justify the price marketingwants, the wax needs to be very fast. specifically, the mean time to finish their standard test course should be less thanseconds for a former olympic champion. to test it, the champion will ski the course 8 times. the champion's times(selected at random) are 59.9 61.9 48.8 52.2 46.6 45.3 50.6 and 41.1 seconds to complete the test course. complete parts a and b below.a) should they market the wax? assume the assumptions and conditions for appropriate hypothesis testing are metfor the sample.assume=0.05. what are the null and alternative hypotheses? choose the correct answer below.b) suppose they decide not to market the wax after the test, but it turns out that the wax really does lower the champion'saverage time to less thanseconds. what kind of error have they made? explain the impact to the company of such anerror.