Question: What is the decision for this Mann-Whitney U test? a. Fail to reject the null hypothesis; grade changes were not diff erent for children based

What is the decision for this Mann-Whitney U test?

a. Fail to reject the null hypothesis; grade changes were not diff erent for children based on their parent’s level of involvement in their education.

b. Reject the null hypothesis; student grades were signifi cantly better if their parents were highly involved in their education.

c. Reject the null hypothesis; student grades were signifi cantly worse if their parents were highly involved in their education.

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