In the excel file credit risk data, test the hypotheses that the number of months employed is the same for applicants with low credit risk as for those with high redit risk evaluations. Use a level of significance of 0.01. Please work problem out in excel.

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?

What is the slope of the line that contains the points (-5, 6) and (14. - 7)?

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307