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Unformatted text preview: AP Statistics – Chapter 7 Quiz Review December 7, 2009 1. A report of the National Center for Health Statistics says that the heights of 20-year-old men have mean 176.8 centimeters (cm) and standard deviation 7.2 cm. There are 2.54 centimeters in an inch. What are the mean and standard deviation in inches? 2. Assume that you flip a fair coin 5 times and count the number of tails. (a) Construct a (table) probability distribution for X = # of tails (b) Construct a probability histogram for X = # of tails (c) P(X&lt;3) = ? (d) P(1&lt;X&lt;4) = ? 3. Consider the triangle: (a) Is this a probability distribution? Justify your answer. (b) Assuming this is a probability distribution for a continuous random variable x: i. P(x ≤ 1) = ? j. P(0.5 ≤ x ≤ 1.5) = ? k. P(x ≥ 1.8) = ? l. P(x &lt; 2) = ? 4. You have two instruments with which to measure the height of a tower. If the true height is 100 meters, measurements with the first instrument vary with mean 100 meters and standard deviation 1.2 meters. measurements with the first instrument vary with mean 100 meters and standard deviation 1....
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This note was uploaded on 05/01/2011 for the course AP CLASSES 101 taught by Professor Mr.smith during the Spring '11 term at Korea Advanced Institute of Science and Technology.
- Spring '11