Assume that the average variance of return for an individual security is 50 and that the average covariance is 10. what is the expected variance of an equally weighted portfolio of 5, 10, 20, 50, 100, 500 & 1000 securities? how many securities need to be held before the risk of a portfolio is only 10% more than the minimum?

Assume that (i) setups need to be completed first; (ii) a setup can only start once the batch has arrived at the resource, and (iii) all flow units of a batch need to be processed at a resource before any of the units of the batch can be moved to the next resource. process step 1 molding 2 painting 3 dressing setup time 15 min. 30 min. no setup processing time 0.25 min./unit 0.15 min./unit 0.30 min./unit which batch size would minimize inventory without decreasing the process capacity?

Southeastern oklahoma state university's business program has the facilities and faculty to handle an enrollment of 2,000 new students per semester. however, in an effort to limit class sizes to a "reasonable" level (under 200 generally), southeastern's dean, holly lutze, placed a ceiling on enrollment of 1,600 new students. although there was ample demand for business courses last semester, conflicting schedules allowed only 1,440 new students to take business courses.the utilization rate for southeastern=%the efficiency rate for southeastern=%

The upper-level managers of synergy technology are meeting for the week to look at the long-term company goals and overall direction of the organization. the ceo has expressed her concern over the economy and has told her managers to look closely at the environment outside the organization before making decisions and to be future oriented. in this meeting, top managers of synergy are