A find the 90 confidence interval for the mean sat

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Unformatted text preview: buted. a. Find the 90% confidence interval for the mean SAT-math score for the population of all seniors in the district. b. Explain the meaning of the above confidence interval. 3. The effect of exercise on the amount of lactic acid in the blood was examined in an article for an exercise and sport magazine. Eight males were selected at random from those attending a week-long training camp. Blood lactate levels were measured before and after playing three games of racquetball, as shown in the accompanying table. Use this data to estimate the mean increase in blood lactate level using a 95% confidence interval. Player 1 2 3 4 5 6 7 8 Before 13 20 17 13 13 16 15 16 After 18 37 40 35 30 20 33 19 4. A 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A preliminary sample standard deviation is 2.9. Find the he smallest sample size n that provides the desired accuracy....
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This document was uploaded on 02/26/2014 for the course MATH 2311 at University of Houston.

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