Title: In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher ...
Post by: mdagenh1 on Jan 19, 2020
In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed. He picks a random sample of 60 students and obtains their mean math SAT score, which is 469. Test whether the claim that the average math SAT score at the school has dropped from 475 is supported or not supported. Assume that 
▸ not supported
▸ supported
▸ not supported
▸ supported
Title: In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher ...
Post by: jeromet1 on Jan 19, 2020
Content hidden