The College Board reports that the national mean and standard deviation for high school seniors taking the SAT-V is μ =465 and o=55. A local principal wants to know if the students in his school are performing at or above the national average on the SAT-V. He takes a random sample of 15 seniors and obtains the following scores. SAT-V 480 ΣΧ=7,780 Calculate the sample mean of SAT-V? (Round to the hundredth place if it is necessary.) 560 490 410 520 500 480 450 470 530 520 550 570 620 630

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