Using TCP/IP Sockets in C++
1. Write a program that authenticates and queries a RDBMS. (more…)
Determine whether a Traffic Jam puzzle has a solution in k moves. If so, print out the list of moves that solve the puzzle. If not, print “No solution.”
Any strategy can be used as long as the program can at least detect when the search has cycled. A cycle is when the program encounters the same board layout more than once during a series of moves (example below). If a particular arrangement of cars has been encountered and has been processed, the next time that arrangement is encountered it should not be processed again.
Solutions will likely use various data structures. (more…)
A company is planning to invest $75,000 (before taxes) in a personnel training program. The $75,000 outlay will be charged off as an expense by the firm this year (Year 0). The returns estimated from the program in the forms of greater productivity and less employee turnover are as follows (on an after-tax basis):
Physical Development in Early Adulthood
During early adulthood, people begin make important life decisions in three areas: career, family, and health. Young adults establish patterns of nutrition and physical activity that can have either positive or negative effects on their physical development in later stages of adulthood. They also begin to make decisions about what career path to follow. At some point during early adulthood, individuals also choose either to marry or remain single, and decide whether or not to start a family. Consider the following example:
Jeff is 23 years old. He recently graduated from college with a business degree and took a managerial position with a midsize company. He likes his coworkers, but often finds himself bored with his work. Although he was active in college, recently he has gained about 10 pounds due to his sedentary job and lack (more…)
Write a method called swapSubtrees, which swaps all of the left and right subtrees in the given binary trees (see screenshot attached below). Add this method to the class Binary Tree and create a program to test this method for these 2 trees. Show the original trees and the resulting trees.
Note: To test the algorithm, first create a binary search tree.
To compare the battery life of Duracell versus Energizer batteries, a sample of 140 Duracell batteries lasted an average of 345 minutes with a standard deviation of 95 minutes and a sample of 125 Energizer batteries lasted an average of 280 minutes with a standard deviation of 86 minutes.
a) At the 1% level of significance, test the hypothesis that Duracell batteries last at least 45 minutes longer on average than Energizer batteries?
b) What is the p-value?
A local supermarket spent $250,000 remodeling. Prior to remodeling, the average daily receipts were $57,500. In a sample of 18 days following the remodeling, daily receipts were $59,800 with a standard deviation of $5,460. At the 10% significance level, what can you conclude as to whether the remodeling improved daily receipts?
In past years the mean IQ of enlisted men in the Army was 103. A general claims that due to low pay, the average IQ of new enlisted men is lower than in the past. In a random sample of 60 enlistees, the mean IQ was 98 with a standard deviation of 20. a) At the 8% significance level, what can be concluded about general’s claim?
b) What is the p-value of this test?