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PSY3204 CHAPTER 5 QUIZ - P SY3204 C HAPTER 5 QU IZ Exhibit...

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PSY3204 CHAPTER 5 QUIZ Exhibit 5-5 Let's assume that the scores are normally distributed on a test with a population mean of 75 and standard deviation equal to 16. 1. Refer to Exhibit 5-1. What is the percentile rank of a score of 56? 11.70 Exhibit 5-1 A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. 2. Refer to Exhibit 5-1. The percentile rank of a price of $13.87 is ____. 98.78 3. Refer to Exhibit 5-1. What percentage of the distribution lies between $5 and $11? 78.41 4. Refer to Exhibit 5-1. What percentage of the distribution lies below $7.42. 32.28 5. Refer to Exhibit 5-1. The stock price beyond which 0.05 of the distribution falls is ____. 12.44 6. Refer to Exhibit 5-1. The percentage of scores that lie between $9.00 and $10.00 is ____. 15.31 7. The mean of the z distribution equals ____.
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0 Exhibit 5-4 A distribution has a mean of 60.0 and a standard deviation of 4.3.
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