In a study on college dropout rates , researchers found one factor that influenced the decision to drop out was expected GPA for a student who...

what are the steps to solving this equation? What is the correct answer?

7 . In a study on college dropout rates , researchers foundone factor that influenced the decision to drop out wasexpected GPA for a student who studied 2 hours per day .In a sample of 307 college students who studied 2 hoursper day , the mean GPA was 3. 71 and the standarddeviation was . 66 . Provide an interval estimate for the truepopulation mean GPA, H using a confidence coefficient of0. 98.