ACT Scores A survey of 1000 students nationwide showed a mean ACT score of 21.4. A survey of 500 West Virginia scores showed a mean of 21.0. If the population standard deviation in each case is 3, can...

Extracted text: ACT Scores A survey of 1000 students nationwide showed a mean ACT score of 21.4. A survey of 500 West Virginia scores showed a mean of 21.0. If the population standard deviation in each case is 3, can we conclude the national average is greater than the West Virginia average? Use a= 0.10 and use u, for the nationwide mean ACT score. Part 1 of 5 d identi ar least two decimal cal va e them with Critica e)1.28 Part: 2 / 5 Part 3 of 5 (c) Compute the test value. Always round z score values to at least two decimal places. z =