Can someone please help me solve this?

\fMany studies have been conducted to determine the factors that affect happiness. One such study relates happiness with age and finds that holding everything else constant, people are least happy when they are in their mid-forties. The data set Happiness shows a person's age and self-report of well-being on a scale of 0 to 100. Use the following regression output to construct a 95% confidence interval for the expected well-being score when someone is 65 years old. Standard C oeicients Error t Stat P-vafue Intercept 56.17717172 5.214513157 10.77323 3.06147E-10 Age 0.28445534 0087065391 3.267146 0.003526175 C\" 0.104 to 0.465 C\" 70.66 to 78.68 C\" 65.20 to 84.12 C\" 45.36 to 66.99