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On the first exam, the mean score is 65.0 and the stan-dard deviation is 7.00. On the second exam, the mean score is 55.0 with a standard devia-tion of 10.00. The correlation coefficient of the two scores is 0.70. Obtain the least squares regression line for us-ing the second exam score to predict the first.
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1.1: Definitions of Statistics, Probability, and Key Terms Use the following information to answer the next three exercises. A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.
18.05 Introduction to Probability and Statistics (S22), Exam 1 Review: all questions: solutions
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