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dent ading Time mprehension Edu 5 36 The ability to read rapidly and simultaneously maintain...

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dent ading Time mprehension Edu 5 36 The ability to read rapidly and simultaneously maintain a high level of comprehension is often a determining factor in the academic success of many high school students A school district is considering a supplemental reading program for incoming freshmen Prior to implementing the program the school runs a pilot program on a random sample of n 20 students The students were thoroughly tested to determine reading speed and reading comprehension Based on a fixed length standardized test reading passage the following reading times in minutes and comprehension scores based on a 100 point scale were recorded 12 3 4 5 5 7 15 12 8 60 76 76 90 81 6 7 8 9 10 11 7 10 11 9 13 10 75 95 98 88 73 90 66 91 83 12 13 14 15 16 17 18 19 20 n 6 11 8 10 8 7 6 11 8 20 100 85 76 69 91 78 20 S y 9 10 82 05 10 88 2 573 a What is the population about which inferences are being made b Place a 95 confidence interval on the mean reading time for all incoming fresh men in the district c Plot the reading time using a normal probability plot or boxplot Do the data appear to be a random sample from a population having a normal distribution d Provide an interpretation of the interval estimate in part b

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