samplequiz2 - Stat 119 Quiz 2A Sample quiz, Chapter 6 Name:...

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Stat 119 Quiz 2A Name: ______________________ Sample quiz, Chapter 6 Red id: ______________________ 1. (1 point) A Z-score of 2 means A. The observation is 2 standard deviations smaller than the mean B. The observation is 2 standard deviations larger than the mean C. The observation is twice larger than the mean D. The difference between the observation value and the mean is 2 Answer : Use the following information to answer questions 2-4 The weights of young adult males are normally distributed, with a mean of 160 pounds, and a standard deviation of 25 pounds. 2. (2 points) Using the Empirical Rule, what percentage of young adult males weigh between 135 and 210 pounds? 3. (2 points) What proportion of young adult males weigh less than 185 pounds? 4. (2 points) For the distribution of young adult males, the heaviest 2.5% will weigh more than what amount? 5. (2 points) Suppose Susan scored a 700 on the SAT test and that placed her on the 84 th percentile. The standard deviation of the SAT test was 45. What was the mean score?
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This note was uploaded on 05/04/2008 for the course STAT 119 taught by Professor Helen during the Spring '07 term at San Diego State.

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samplequiz2 - Stat 119 Quiz 2A Sample quiz, Chapter 6 Name:...

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