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62. 32 46.21 73. 12 78-15 71.05 48. 22 7 7. 22 83. 12 72. 10 73. 15 81. 12 $8. 12 7 8.5 76.21

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62. 32 46.21 73. 12 78-15 71.05 48. 22 7 7. 22 83. 12 72. 10 73. 15 81. 12 $8. 12 7 8.5 76.21 82- 14 89:00 76 - 22 76. 15 91.90 77.15 . Find the mean and standard deviation 2 Find a 98%% confidence interval for the population mean . 3.) For a t - distribution with 29 degrees of freedom , find the value of to so that the area between - t 1 and tz is 0.99

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