Amanager at a local bank analyzed the relationship between monthly salary and three independent variables: length of service (measured in months), gender (0 = female, 1 = male) and job type (0 = clerical, 1 = technical). the following anova summarizes the regression results: anova source of variation df sum of squares mean square f regression 3 1004346.771 334782.257 5.96 residual 26 1461134.596 56197.48445 total 29 2465481.367 coefficients standard error t stat p-value intercept 784.92 322.25 2.44 0.02 service 9.19 3.20 2.87 0.01 gender 222.78 89.00 2.50 0.02 job -28.21 89.61 -0.31 0.76 based on the anova, the multiple coefficient of determination is

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Insurance companies have internal controls in place to protect assets, monitor the accuracy of accounting records and encourage operational efficiencies and adherence to policies. these internal controls are generally of two types: administrative controls and accounting controls. administrative controls are the policies and procedures that guide the daily actions of employees. accounting controls are the policies and procedures that delineate authorizations of financial transactions that are done, safeguard assets, and provide reports on the company’s financial status in a reliable and timely manner. internal controls should include both preventative and detective controls. the purpose of preventative controls is to stop problems and errors before they occur. detective controls identify problems after they have occurred. preventative controls are usually more effective at reducing problems, but they also tend to be more expensive. internal controls must be flexible to adjust for changes in laws and regulations in addition to adding new products or modifying current ones. companies must also do regular analyses to ensure that the benefits of implementing the controls are worth their costs. when concerned about paying unwarranted insurance claims which type of control would be useful?

Suppose that with a budget of $110, deborah spends $66 on sushi and $44 on bagels when sushi costs $2 per piece and bagels cost $2 per bagel. but then, the price of bagels falls to $1 per bagel.