The average math SAT score is 511 with a standard deviation of 115. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this...



The average math SAT score is 511 with a standard deviation of 115. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this school was​ selected, and the mean math SAT score was 548.Is the high school justified in its​ claim? Explain.






Solution.

_____(Yes/No)​,because the​ z-score_______is not_______(unusual/not unusal) since it_______(lies/does not lie) within the range of a usual​ event, namely within __________(2 standard deviations/1 standard deviations/3 standard deviations)of the mean of the sample means.




​(Round to two decimal places as​ needed.)



Jun 09, 2022
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