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1. (10 points) Once upon a time, I had a fast-food lunch with a mathematician colleague. I<br>noticed a very strange behavior in him. I called it the Au-Burger Syndrome since it was<br>discovered by me at a burger joint. Based on my unscientific survey, it is a rare but real malady<br>inflicting 2% of mathematicians worldwide. Yours truly has recently discovered a screening test<br>for this rare malady, and the finding has just been reported to the International Association of<br>Insane Scientists (IAIS) for publication. Unfortunately, my esteemed colleagues who reviewed<br>my submitted draft discovered that the reliability of this screening test is only 80%. What it<br>means is that it gives a positive result, false positive, in 20% of the mathematicians tested even<br>
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STAT 200 Success Begins / snaptutorial.com STAT 200 Quiz 2 For more classes visit www.snaptutorial.com 1. (10 points) Once upon a time, I had a fast-food lunch with a mathematician colleague. Inoticed a very strange behavior in him. I called it the Au-Burger Syndrome since it was
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 2 HomeWork For more classes visit www.snaptutorial.com 7. For the data from the 1977 Stat. and Biom. 200 class for eye color, construct: a. pie graph b. horizontal bar graph c. vertical bar graph
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 3 HomeWork For more classes visit www.snaptutorial.com 7. You flip a coin three times. (a) What is the probability of getting heads on only one of your flips? (b) What is the probability of getting heads on at least one flip? 25. You are to participate in an exam for which you had no chance to study, and for that reason cannot do anything but guess for each question (all questions being of the multiple choice type, so the chance of guessing the correct answer
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 4 HomeWork For more classes visit www.snaptutorial.com 8. Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution with a mean of 71 mph and a standard deviation of 8 mph. a. The current speed limit is 65 mph. What is the proportion of vehicles less than or equal to the speed limit? b. What proportion of the vehicles would be going less than 50 mph? c. A new speed limit will be initiated such that approximately 10% of vehicles will be over the speed limit. What is the new speed
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 5 HomeWork For more classes visit www.snaptutorial.com 5. When you construct a 95% confidence interval, what are you 95% confident about? 8. What is the effect of sample size on the width of a confidence interval?
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 6 HomeWork For more classes visit www.snaptutorial.com Lane Chap. 11 18. You choose an alpha level of .01 and then analyze your data.
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 7 HomeWork For more classes visit www.snaptutorial.com Lane Chap. 14 2. The formula for a regression equation is Y’ = 2X + 9. a. What would be the predicted score for a person scoring 6 on X? b. If someone’s predicted score was 14, what was this person’s score on X?
STAT 200 Success Begins / snaptutorial.com STAT 200 Week 8 HomeWork For more classes visit www.snaptutorial.com Lane Chap. 15 10. If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?
