Older people often have a hard time finding work. aarp reported on the number of weeks it takes a worker aged 55 plus to find a job. the data on number of weeks spent searching for a job are contained in the excel online file below. construct a spreadsheet to answer the following questions. open spreadsheet a. provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. weeks (to whole number) b. at 95% confidence, what is the margin of error? round the answer to four decimal places. (to 4 decimals) c. what is the 95% confidence interval estimate of the mean? round the answer to two decimal places. ( , ) weeks