Historically, the average age of the Walsh College students has been 36 years with standard deviation of 2.9 years. Dr. Scafe wants to estimate the average age of the students for this academic year and believes that the age for her students from last semester's QM520 class is a representative sample that can provide an accurate interval estimation for the student's age attending Walsh College during this academic year. If there were 35 students in her QM520 class last semester and the average age for these students was 26 years, what would be the upper limit of the 95% confidence interval for the age of the students attending Walsh College this academic year?

a.27.0

b.36.8

c.25.0

d.35.0