According to an article in marketing news, fewer checks are being written at grocery store checkout stands than in the past. to determine whether there is a difference in the proportion of shoppers who pay by check among three consecutive years at a 0.05 level of significance, the results of a survey of 500 shoppers in three consecutive years are obtained and presented below. check written year 1 year 2 year 3 yes 225 175 125 no 275 325 375 referring to table above, the expected number of shoppers who pay by check in year 1 if there is no difference in the proportion of shoppers who pay by check among the three years is

Match the vocabulary word to the correct definition. 1. human resources department 2. job description 3. ethics 4. labor relations 5. occupational safety & health administration a. a detailed list of the functions and requirements for a position b. the exchange between the employer and employee c. principles that define appropriate conduct d. the government agency responsible for monitoring safety in the workplace e. the division of a business responsible for hiring, managing,maintaining, and firing the workforce

An important application of regression analysis in accounting is in the estimation of cost. by collecting data on volume and cost and using the least squares method to develop an estimated regression equation relating volume and cost, an accountant can estimate the cost associated with a particular manufacturing volume. consider the following sample of production volumes and total cost data for a manufacturing operation. production volume (units) total cost ($) 400 4000 450 5000 550 5400 600 5900 700 6400 750 7000 compute b 1 and b 0 (to 2 decimals if necessary). b 1 b 0 complete the estimated regression equation (to 2 decimals if necessary). = + x what is the variable cost per unit produced (to 1 decimal)? $ compute the coefficient of determination (to 4 decimals). note: report r 2 between 0 and 1. r 2 = what percentage of the variation in total cost can be explained by the production volume (to 2 decimals)? % the company's production schedule shows 500 units must be produced next month. what is the estimated total cost for this operation (to 2 decimals)? $

The state in which the manufacturing company you work for is located regulates the presence of a particular substance in the environment to concentrations ≤ x. recently-released, reliable research endorsed by the responsible federal agency conclusively demonstrates that the substance poses no risks at concentrations up to 5x. your company has asked you to consider designing a new process with a waste discharge stream containing up to 2x of the substance. based on the stated conditions, describe this possible.