Which situation below would you be considered a principal in an agency relationship?

Question 1 options:

[USING R & dataset “Boston”] Using the leave-one-out cross-validation and 5-fold cross-validation techniques to compare the performance of models in (a) and (b) with:

(a) SalesPredict <- lm(Sales ~ Price + Urban + US, data = Carseats)

(b) SalesRevise <- lm(Sales ~ Price + US, data = Carseats)

Hint: Functions update (with option subset) and predict.

I am sure you have heard the saying that goes something like why fix what isn't broken, but how will you know if it is broken. Policies and procedures are usually seldom reviewed once implemented which can prove to be disastrous. Explain why and how often a facility should review and update the security policy.

Consider a binomial heap where only insert and findmin operations are allowed (no extractmin). Show that both of these operations can be done in amortized O(1) time. Hint: For findmin consider explicitely storing a pointer to the tree with minimum root and then update it during insert if needed. For insert, you’ll need to use amortization and develop a good potential function.

2. The computer operations department had a business objective of reducing the amount of time to fully update each subscriber’s set of messages in a special secured email system. An experiment was conducted in which 40 subscribers were selected with four difference messaging systems and two connection media types used. The subscribers were randomly assigned so that there were five subscribers in each of the eight combinations of the two factors – messaging system and media used. The updates time are as follows. Use Excel to indicate the importance of each of the two factors and the interaction between them on the update time.

Wildcat Gym, with its 3 branches located in Central New York, wants to assign three recently hired health consultants - Todd, Josh, and Nina - to its 3 branches in Cortland, Auburn, and Oneonta. It is clearly indicated from its Headquarters that none of these three consultants will be assigned to the same locations.

The relocate costs are shown here in the table.

Part a) The Headquarters is trying to find the optimal assignment of personnel to these 3 branches with a minimal relocate cost. Use the network concept and create a network program for the above problem. Make sure you define the variables used and clearly list the objective function and constraints. You do not need to solve the program.

Part b) Later the Headquarters received an update that Todd has left Wildcat Gym and now works for a different company. How will you modify your above program to reflect this update?

The computer operations department had a business objective of reducing the amount of time to fully update each subscriber's set of messages in a special secured email system. An experiment was conducted in which 23 subscribers were selected and three different messaging systems were used. Eight subscribers were assigned to each system, and the update times were measured as follows:

Given Sample Means: x̅a = 41.46, x̅b = 36.33, x̅c = 35.84, Grand Mean = 38.29

Given Sample Standard Deviations: sa = 4.32, sb = 4.00, sc = 3.02, S = 4.34

A) At the 0.05 level of significance, is there evidence of a difference in the variance of the update times between Systems B and C? (Show your work: hypotheses, test statistic, critical value, and decision).

B) Fill out the following summary table for One-Way ANOVA:

C) Using the Tukey-Kramer method, determine which pair of the designs have the difference in mean distances at the 0.05 level of significance by filling out the following table (the upper-tail critical value from the studentized range distribution with 3 and 20 degrees of freedom as Qα = 3.578)

It is required to develop an application in Java to perform some operations of a bank. The application will have the following classes:

1. Class called Person having following data fields (private):

firstName (String), lastName(String), gender(char), cpr(long), mobile(String) and following methods:

1. Constructor having 5 parameters to initialize all data fields,
2. Set and get methods for all data fields,
3. toString method to return String equivalent of all data fields,

2. Abstract class called Account having following data fields(protected):

accountHolder(Person), ccountNum(long), balance(double)and following methods:

1. Constructor having 3 parameters for all 3 data fields including an object of type Person.
2. Get methods for all three data fields.
3. Abstract method updateBalance to update balance according to parameter.
4. Abstract method withdraw to withdraw money from the account and update balance.
5. Abstract method deposit to deposit money in the account and update balance.
6. method to return String equivalent of all data fields by calling toString method of class Person.

3. Class called Savingsccount that inherit the properties of abstract class Account having following additional data field:

interestRate(double) and following methods:

1. Constructor having 4 parameters for all data fields including that of class Account.
2. Set and get methods for interestRate.
3. Implementation of method updateBalance.
4. Implementation of method withdraw.
5. Implementation of method deposit.
6. Overloaded toString method to return String equivalent of all data fields.

4. Write a class called Bank having only main method to test all functionalities of the application.

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