The National Center for Education Statistics surveyed college graduates concerning numerous issues. For the situation below, choose the most appropriate statistical technique.

Estimate the average number of years it takes students in the population to earn a bachelor's degree if the population standard deviation is known to be 1.25 year.

Group of answer choices

a. Paired sample t-test

b. 1-sample mean analysis

c. Analysis of Variance (ANOVA)

d. 2-sample comparison of means