1. RainMan Inc. is in the business of producing rain upon request. The firm must decide between two investment projects: a new airplane for seeding rain clouds or a new weather control machine built by Dr. Nutzbaum. The discount rate for the new airplane is 9%, while the discount rate for the weather machine is 39% (it happens to have higher market risk). If selected, the airplane or the weather machine would be repetitively replaced at the end of its useful life. The cash flows for one cycle for each project are as follows:

2. 
   
3. Which investment should the company select and why? There is no inflation.

1-A contractor decided to build homes that will include the middle 80% of the market. If the average size of homes built is 1750 square feet, find the maximum and minimum sizes of the homes the contractor should build. Assume that the standard deviation is 96 square feet and the variable is normally distributed.

2-Determine the indicated probability for a binomial experiment with the given number of trials n and the given success probability p. n = 13, p = 0.7, P(Fewer than 4)

3-A student takes a 5 question multiple choice quiz with 4 choices for each question. If the student guesses at random on each question, what is the probability that the student gets exactly 2 questions correct?

4- An investor is considering a $15,000 investment in a start-up company. She estimates that she has probability 0.15 of a $10,000 loss, probability 0.1 of a $10,000 profit, probability 0.3 of a $30,000 profit, and probability 0.45 of breaking even (a profit of $0). What is the expected value of the profit? $11,500 $15,250 $10,000 $8,500

Write a program in Matlab where the program plays a hot and cold game. The user answers two inputs: x=input('what is the x location of the object?') y=input('what is the y location of the object?') You write the program so that the computer plays the game. Pick a starting point. Program Calculates the distance to the object. Program picks another point, calculates the distance to the object. Program knows its at the right spot when the distance is less than 1. The program will consist of mostly loops and if-then statements. ONLY PROMPT THE USER TO INPUT THE "SECRET" X AND Y LOCATION. THE COMPUTER WILL FIND THE POINT. DO NOT KEEP PROMPTING THE USER TO KEEP GUESSING. IT IS THE PROGRAM'S JOB TO FIND THE POINT THE USER HAS CHOSEN. Program is finding a point the user picks in a 20X20 matrix. It also needs to have a counter built in so you know how many steps it takes the program to find the x,y coordinate. Points will be chosen using logic, not random.

In some of the recent corporate scandals, senior executives “doctored the books” and misrepresented the corporate financial status of the company. In others, transactions were created to and from inert or false companies to enhance the bottom line. All of these actions required some intervention and dependence on current or new IT systems. As a result the Federal Government passed the SOX regulations in 2002-2003 and the Dodd-Frank Financial Reform law in 2010.

Do you feel the information technology group could or should identify (expose) these fraudulant practices?

What do you feel the responsibilities of the CIO are relative to internal fraud and illegal activities?

Is the CIO ethically responsible for how the network and computing “utility” within the company is used?

Is it an IT responsibility to build and install systems that cannot be compromised?

Does the information technology have the responsibility to ask “why” a business function is needed when a system is built?

Does the internal or external audit function have any responsibility in guiding the development of new Information Technology systems? Explain.

Task Intro: Password JAVA.

Write a method that checks a password. The rules for the password are:

- The password must be at least 10 characters.
- The password can only be numbers and letters.
- Password must have at least 3 numbers.

Write a test class that tests the checkPassword method.

Hint: You can (really should) use method from built-in String class:

public boolean matches(String regex)

to check that the current string matches a regular expression. For example, if the variable "password" is the string to be checked, so will the expression.

password.matches("(?:\\D*\\d){3,}.*") 

return true if the string contains at least 3 numbers. Regular expression "^ [a-zA-Z0-9] * $" can be used to check that the password contains only numbers and letters.

Let your solution consist of 4 methods:

checkPassword(string password) [only test this method]
checkPasswordLength(string password) [checkPassword help method]
checkPasswordForAlphanumerics(string password) [checkPassword help method]
checkPasswordForDigitCount(string password) [checkPassword help method]

A real estate major collected information on some recent local home sales. The first 6 lines of the database appear below. The columns correspond to the house identification number, the community name, the ZIP code, the number of acres of the property, the year the house was built, the market value, and the size of the living area (in square feet).

For the real estate data of Exercise 1, do the data appear to have come from a designed survey or experiment? What concerns might you have about drawing conclusions from this data set?

Write a Python program that calls a function to sum all the numbers in a list and returns the result to the caller. The main program creates a list (with hard-coded or user input) and passes the list as an argument to the function. You may not use the built-in function, sum.

The program calls a second function to multiply all the numbers in a list passed to it by main and returns the product back to the caller.

List can be created with user input or hard-coded elements.

The program calls a third function that takes the list of words (below) passed to it from main and determines which elements are palindromes without changing the original list.

['racecar', 'Python', 'mom', 'java','level', 'DNA','101101' ]

If true, the function appends the word to a new list and returns it to the caller. The main program prints the list of palindromes returned from the function. The function should not modify the original list passed to it from the main (no side effect).

A palindrome is a word, phrase, number or sequence of words that reads the same backward as forward

Describe briefly the principle of the Rational method and the limitation of this method for runoff estimation. A sub-catchment of area 0.1km² is built on gently sloping land. The average slope of the land is 0.001. The length of the longest natural flow path L is 276.3m. The flow time t_f in the drainage system is 3min. Determine the 50yr design discharge for the subdivision using the rational method, given that the average runoff coefficient of the subdivision is C=0.7.

The above sub-catchment is drained by a pipe system which is also used to drain the second sub-catchment. The second sub-catchment is of area 0.2km², average slope 0.002, L=300m, and t_f=3min, C=0.5. If the pipe system is designed for the 50-yr rainfall event, what is the appropriate duration to be used? Explain briefly. Hence determine the 50yr design discharge of the drainage system.

The 50-yr rainfall intensity i can be calculated from i(mm/hr)=a/(td+b)^c, where a=687, b=4.2, c=0.42, t_d(min)=duration.