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Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution?

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In Professor Smith's statistics course, the correlation between students' total scores before the final exam and their final exam scores is r = 0.67. The preexam totals for all students in the course have a mean of 275 and a

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A wide variety of oak trees grow in the United States. In one study, a sample of acorns was collected from different locations, and their volumes, in cm3, were recorded. In the table are summary statistics for these data: N 38

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The GMAT test is required for admission to most graduate programs in business. In a recent year, the GMAT test scores were normally distributed with a mean of 550 and standard deviation of 100. A. Find the first quartile for the

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A class of 12 students has taken an exam, and the mean of their scores is 71. One student takes the exam late, and scores 92. After including the new score, what is the mean score for all 13 exams?

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1. The exam scores for the students in an introductory statistics class are as follows. 88 63 90 64 82 98 96 75 89 86 76 84 70 67 34 89 85 39 81 96 92 85 a. Compute the mean and the median score. b. Identify the shape of the

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5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? b. What

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On an exam whose scores followed a normal distribution, a student's zscore was +2. What percentage of students scored better than he did? (Use the 689599.7 Rule.)

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Answer the question(s) based on the following situation: 150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with center ì = 65 and standard deviation ó = 10.The

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Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course. 61,74,47,60,62,63,65,79,55,85. In all 135 students took the exam. The third quartile for all 135 scores was 69. How many
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