(The Stock class) Following the example of the Circle class in Section 9.2, design a class named Stock that contains: A string data field named symbol for the stock’s symbol. A string data field named name for the stock’s name. A double data field named previousClosingPrice that stores the stock price for the previous day. A double data field named currentPrice that stores the stock price for the current time. A constructor that creates a stock with the specified symbol and name. A method named getChangePercent() that returns the percentage changed from previousClosingPrice to currentPrice. Draw the UML diagram for the class then implement the class. Write a test program that creates a Stock object with the stock symbol ORCL, the name Oracle Corporation, and the previous closing price of 34.5. Set a new current price to 34.35 and display the price-change percentage.

In a random sample of 20 students in a computer class, the average keyboarding speed was 40 words per minute (WPM) with a standard deviation of 8 WPM. Estimate the mean keyboarding speed for all students taking the class using a 90% confidence level.

In 2011 the U.S. Postal Service charged $0.88 postage for first-class mail retail flats (such as an 8.5’’ by 11’’ envelope) weighing up to 1 ounce, plus$0.17 for each additional ounce up to 13 ounces. First-class rates do not apply to flats weighing more than 13 ounces. Develop a model that relates C, the first-class postage charged, for a flat weighing x ounces. Graph the function.

Nina Finzelberg started her own consulting firm, Finzelberg Consulting Inc., on May 1, 2014. The following transactions occurred during the month of May.

May  1 Stockholders invested $15,000 cash in the business in exchange for common stock.
     2 Paid$600 for office rent for the month.
     3 Purchased $500 of supplies on account.
     5 Paid$150 to advertise in the County News.
     9 Received $1,400 cash for services performed.
    12 Paid$200 cash dividend.
    15 Performed $4,200 of services on account.
    17 Paid$2,500 for employee salaries.
    20 Paid for the supplies purchased on account on May 3.
    23 Received a cash payment of $1,200 for services performed on account on May 15.
    26 Borrowed$5,000 from the bank on a note payable.
    29 Purchased office equipment for $2,000 paying$200 in cash and the balance on account.
    30 Paid $180 for utilities.

Instructions

(a) Show the effects of the previous transactions on the accounting equation using the following format. Assume the note payable is to be repaid within the year. Include margin explanations for any changes in Retained Earnings.

Write a class named Person with data attributes for a person’s name, address, and telephone number. Next, write a class named Customer that is a subclass of the Person class. The Customer class should have a data attribute for a customer number and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Demonstrate an instance of the Customer class in a simple program.

Compute the missing amounts for each of the following notes.

In each of the following sentences, underline the simple subject once and the verb twice. If the subject is understood, write it in parentheses before the sentence. Be sure to include all parts of a verb phrase and all parts of a compound subject or verb.

Example ${\color{#c34632}{(You)}}$ 1. $\underline{\underline{\text{Come}}}$ with me to buy Mother’s birthday present, please.

Neither subtle hints nor candid suggestions penetrate her consciousness.

A Class C internet address, used for medium-size networks, is a bit string of length 32. The first bits are 110 (to identify it as a Class B address). The netid is given by the next 21 bits, which identifies the network. The hostid is given by the remaining 8 bits, which identifies the computer interface. The hostid must not consits of all 0's or all 1's. How many Class C addresses are available?

Use a graphing calculator to construct a 95% confidence interval for a sample of size 30 from a uniform distribution over the interval (0, 1). Take a class poll to determine the percentage of confidence intervals that contain the true mean. Discuss the result in class.

Mr. Anderson's fifth grade class is getting a class pet. Seven students vote to get a gerbil, 3 vote for a fish, 6 vote for a mouse, and 4 vote for a lizard.
What is the mode of the data set? What does it mean for this situation?

Mr. Anderson's fifth grade class is getting a class pet. Seven students vote to get a gerbil, 3 vote for a fish, 6 vote for a mouse, and 4 vote for a lizard.
Make a dot plot of the data.Use the dot plot to describe the data.

Compute the missing amounts for each of the following notes.

Under what circumstances does Java automatically provide a default constructor for a class?

Assuming that a year has 365 days, write a class named DayOfYear that takes an integer representing a day of the year and translates it to a string consisting of the month followed by day of the month. For example,

Day 2 would be January 2.
Day 32 would be February 1.
Day 365 would be December 31.

The constructor for the class should take as parameter an integer representing the day of the year, and the class should have a member function print() that prints the day in the month-day format. The class should have an integer member variable to represent the day and should have static member variables of type string to assist in the translation from the integer format to the month–day format.

Test your class by inputting various integers representing days and printing out their representation in the month–day format.