For each of the following statements below, decide whether it belongs to descriptive statistics or inferential statistics and provide a brief explanation for your answer. a) A car manufacturer wishes to estimate the average lifetime of batteries by testing a sample of 50 batteries. b) A politician wants to determine the total number of votes his rival obtained in the sample used in the exit poll.

A pollster wants to know the average income of those who supported John McCain for president. He asks 100 supporters and calculates a mean of​ $67,543. Is this mean x overbar   or mu ​?   A. mu ​, because it is calculated based off data from the entire population..   B. x overbar ​, because it is calculated based off data from the entire population.   C. mu ​, because it is calculated based off data from a sample.   D. x overbar ​, because it is calculated based off data from a sample.

The Department of the Census provides the following data table.   single married widowed divorced total Male .129 .298 .013 .040 .48 Female   .305 .057 .054 .52 Total .233 .603 .070 .094 1.0   a) Fill in the missing word for each of the totals. (What is being totaled in each column/row?) b) Find P(Widowed and Male). = .013 c) Find P(Widowed)=.070 d) Find P(Married or Female). Write out the formula you use so I know that you know what you are doing. e) Find P(Widowed and Divorced). Explain your answer. f) Are Divorced and Male Mutually Exclusive events. Why or why not?