The following data relate to marks in Advanced Accounts and Business Statistics in B.Com. (H.), II Examination of a particular year in California University : Mean Marks in Advanced Accounts =30 Mean Marks in Business Statistics =35 Standard Deviation of Marks in Advanced Accounts =10 Standard Deviation of Marks in Business Statistics =7 Coefficient of Correlation between the Marks in Advanced Accounts and Business Statistics =0.8 Find the two regression lines and calculate the expected marks in Advanced Accounts if the marks secured by a student in Business Statistics are 40.

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