STAT 200
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1. (10 points) Once upon a time, I had a fastfood lunch with a mathematician colleague. I
noticed a very strange behavior in him. I called it the AuBurger Syndrome since it was
discovered by me at a burger joint. Based on my unscientific survey, it is a rare but real malady
inflicting 2% .....

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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
d. &nb.....

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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 gue.....

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8. Assume the speed of vehicles along a stretch of I10 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 vehic.....

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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?
11. A population is known to be normally distributed with a standard deviation of 2.8.
Compute the 95% confidence interval on th.....

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4. Why is a 99% confidence interval wider than a 95% confidence interval?
10. The effectiveness of a bloodpressure drug is being investigated. How might an experimenter demonstrate that, on average, the reduction in systolic blood pressure is 20 or more?
12. A person claims to be able to.....

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Lane Chap. 11
18. You choose an alpha level of .01 and then analyze your data.
a. What is the probability that you will make a Type I error given that the null hypothesis is true?
b. What is the probability that you will make a Type I error given that the null hypothesis is false?
.....

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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?
6. For the X, Y data below, compute:
a. r and determine if .....

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Lane Chap. 15
10. If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?
17. The following data are from a hypothetical study on the effects of age and time on scores on a test of reading comprehension. Compute the analysis of variance summ.....
