Question 1 (25 marks) a. What are data science and data science project life cycle? Please use ONE business case
to explain the data science project life cycle.
(13 marks)
b. Elaborate the key elements in Business Intelligence (BI) environment. Identify the
differences between BI and data science.
(12 marks)

Martinez manufacturing applies overhead based on direct labor hours. the company estimates that their overhead for the year will be $180,000, and that they will use 72,000 direct labor hours. during the year, martinez manufacturing actually used 75,000 direct labor hours and actual overhead costs were $190,000. at the end of the year, manufacturing overhead was: overapplied by $2,500. overapplied by $10,000. underapplied by $2,500. underapplied by $10,000.

An annuity that goes on indefinitely is called a perpetuity. the payments of a perpetuity constitute a/an series. the equation is: a stock with no maturity is an example of a perpetuity. quantitative problem: you own a security that provides an annual dividend of $170 forever. the security’s annual return is 9%. what is the present value of this security? round your answer to the nearest cent. $

Arnold rossiter is a 40-year-old employee of the barrington company who will retire at age 60 and expects to live to age 75. the firm has promised a retirement income of $20,000 at the end of each year following retirement until death. the firm's pension fund is expected to earn 7 percent annually on its assets and the firm uses 7% to discount pension benefits. what is barrington's annual pension contribution to the nearest dollar for mr. rossiter? (assume certainty and end-of-year cash flows.)