The standard deviation of the market-index portfolio is 35%. Stock A has a beta of 1.40 and a residual standard deviation of 45%. a-1. Calculate the total variance of stock A if its beta is increased by 0.20?
a-2. Calculate the total variance of stock A if its residual standard deviation is increased by 7.54%?
b. An investor who currently holds the market-index portfolio decides to reduce the portfolio allocation to the market index to 90% and to invest 10% in stock A. Which of the following changes (an increase of 0.20 in beta or increase of 7.54% in residual standard deviation) will have a greater impact on the portfolio's standard deviation?
i. Both will have the same impact.
ii. Increase of .20 in beta will have a greater impact.
iii. Increase of 7.54% in the residual standard deviation will have a greater impact.

Bridge building company estimates that it will incur $1,200,000 in overhead costs for the year. additionally, the company estimates 50,000 direct labor hours will be spent building custom walking bridges for the year at a total direct labor cost of $600,000. what is the predetermined overhead rate for bridge building company if direct labor costs are to be used as an allocation base?

Modern firms increasingly rely on other firms to supply goods and services instead of doing these tasks themselves. this increased level of is leading to increased emphasis on management.

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.