1)  A light bulb producing company states that its lights will last an average of 1200 hours with a standard deviation of 200 hours.  A sample of 100 light bulbs from the company were tested and the researcher found that the average life of each light bulb was 1050 hours.  At a 95% confidence level, determine whether these light bulbs are in compliance with the […]

A company offered one half of its employees a bonus if the production of cookies increased by 15%. The other half of the employees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 10. What […]

Directions: For this portfolio, you will use your knowledge of functions to design a roller coaster. You will draw a short roller coaster on graph paper, plot ordered pairs on its path, and determine the slope, or rate of change, along the ride. Roller Coaster Design Instructions Submit responses to the following items, and be sure to show all of your work. 1. Draw the […]

Your company has just developed a new material that can be used in the production of 20 ounce containers for liquids that is safe and biodegradable. you have been asked to the determine the best shape for the containters – in other words can you determine which containers regular prisms or cylinder hold 20 ounces but can be produced at the best price. the cost to […]

Congratulations! You are a proud owner of an engraving business. However, you are using an aging rotary engraver to engrave plaques and trophies. The machine has been reliable, but does require regular maintenance and periodic replacement of parts. You have just found out that this engraver will no longer be supported by the manufacturer. This means that service and parts will be hard to get […]

Directions: The purpose of Project 8 is to prepare you for the final, comprehensive exam and is set up EXACTLY the same. Questions 1 and 2 are not graded in this exercise, but are on the final. Be sure to answer them still so you can receive feedback. Once done with these, move into the calculation questions. Be advised that you will need to decide […]

Outline your quarter by quarter class schedule. Take note of any internships, jobs, or work you may plan on doing during each quarter as well as over the summer. What do you plan on achieving in your years at CSUSB? Are you interested in Studying Abroad? Do you plan on getting any certificates? Does your major require field work or a lot of experience prior […]

One of the most crucial components of this course is developing a research project from conceptualizing a research problem and develop a number of complementary design, measurement, and data collection approaches to bring evidence to bear on the problem.  We are going to create a research study based on previous research you choose to use.  We will then determine which variables we can use from […]

Ben Davis had just completed an intensive course in Statistical Thinking for Business Improvement, which was offered to all employees of a large health maintenance organization. There was no time to celebrate, however, because he was already under a lot of pressure. Ben works as a pharmacist’s assistant in the HMO’s pharmacy, and his manager, Juan de Pacotilla, was about to be fired. Juan’s dismissal […]

The Discussion Board (DB) is part of the core of online learning. Classroom discussion in an online environment requires the active participation of students and the instructor to create robust interaction and dialogue. Every student is expected to create an original response to the open-ended DB question as well as engage in dialogue by responding to posts created by others throughout the week. At the […]