A large school district has several middle schools Three schools were randomly chosen, and four classes were selected from each The numbers of pupils in each class are shown here At Icirc plusmn 0 10, is there sufficient evidence that the mean number of students per class differs among schools MS 2 28 22 25 30 MS 1 MS 3 25 20 23 22 21 25 19 17

Question: A large school district has several middle schools. Three schools were randomly chosen, and four classes were selected from each. The numbers of pupils in

A large school district has several middle schools. Three schools were randomly chosen, and four classes were selected from each. The numbers of pupils in each class are shown here. At Î± = 0.10, is there sufficient evidence that the mean number of students per class differs among schools?

MS 2 28 22 25 30 MS 1 MS 3 25 20 23 22 21 25 19 17

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