Module 4 HW MyStatLab Chapter 6.1-6.5.docx - 1 Module 4...

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1 Module 4 - Assignment: MyStatLab Homework Chapters 6.1-6.5 You are required to complete the Module 3 Homework assignment using MyStatLab. Homework problems from textbook Chapters 6.1-6.5 were chosen to give you practice with statistical skills and concepts. When working MyStatLab Homework problems, take your time to practice concepts, methods, and processes learned in the textbook reading assignment. Focus on gaining an understanding, not just getting the right answer. MyStatLab features many learning aids to help you solve problems. You can print MyStatLab problems to solve offline. However, answers must be submitted electronically for grading. Partial credit may be earned on multi-part questions. You have three (3) attempts to complete the MyStatLab Homework assignments . Assignments are due by the end of the module in which it is assigned. If your Homework assignment is late, there is a penalty. Every day after the due date, there is a 10% penalty on questions not answered on time. Return to the Module 1 - Assignment: MyStatLab Homework Chapter 1 page to review important information on how to complete your homework. Important Use Microsoft Excel and StatDisk tools as much as possible. 1. What's wrong with the following statement? "Because the digits 0, 1, 2, . . . , 9 are the normal results from lottery drawings, such randomly selected numbers have a normal distribution."
2. A normal distribution is informally described as a probability distribution that is "bell-shaped" when graphed. Draw a rough sketch of a curve having the bell shape that is characteristic of a normal distribution. 3. What requirements are necessary for a normal probability distribution to be a standard normal probability distribution?
4. What does the notation zα indicate?
5. The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 6 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 4.25 minutes.
A continuous random variable has a uniform distribution if its values are spread evenly over the range of possibilities. The graph of a uniform distribution results in a rectangular shape. To find the probability of a passenger that has a waiting time greater than 4.25 minutes, graph the uniform distribution and find the area of the shaded region. Sorry, your answer is not correct.
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6. The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0and 7 minutes. Find the probability that a randomly selected passenger has a waiting time less than 0.75 minutes. (or between 0 and 9 minutes)

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