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Q.No.1. A random sample of 64 students in the M.A. (Pre) class made an average score of 60, with a standard deviation score of 15.

Q.No.1. A random sample of 64 students in the M.A. (Pre) class made an average score of 60, with a standard deviation score of 15. Construct a 95% confidence interval estimate for the mean score of entire class.

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