A) What is a null and alternative hypothesis? (2 marks) b) What does the level of significance tell you? (1 marks)
c) How can you identify a two-tailed test? (1 marks)
d) Briefly explain the difference between a two-tailed and a one-tailed test
(2 marks)
e) Briefly explain when the z-distribution and t-distribution are used to
perform a test of hypothesis (2 marks)
f) There are two types of errors that can occur in hypothesis testing,
identify the two types of errors (2 marks)

The following cost and inventory data are taken from the accounting records of mason company for the year just completed: costs incurred: direct labor cost $ 90,000 purchases of raw materials $ 134,000 manufacturing overhead $ 205,000 advertising expense $ 45,000 sales salaries $ 101,000 depreciation, office equipment $ 225,000 beginning of the year end of the year inventories: raw materials $ 8,100 $ 10,300 work in process $ 5,900 $ 21,000 finished goods $ 77,000 $ 25,800 required: 1. prepare a schedule of cost of goods manufactured. 2. prepare the cost of goods sold section of mason company’s income statement for the year.