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Just I need the option D Question 1 1 pts The principal of a primary school wants to know the grade point average of her

Just I need the option

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D Question 1 1 pts The principal of a primary school wants to know the grade point average of her institution, so she takes a random sample of 120 students and observes that the general average is 8.2 with a standard deviation of 0.2. Determine the standard error of the institution's grades. O 0.4972 O 0.7486 0.7486 O 0.2514 O 0.0183

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