One way to check on how representative a survey is of the population from which it was drawn is to compare various characteristics of the sample with the population characteristics. A typical variable used for this purpose is age. The GSS 2018 found a mean age of 48.69 and a standard deviation of 17.99 for its sample of 1,495 American adults is 37.80. Calculate the t statistic ..?

a. 12.95

b. 20.53

c. 23.17

d. 1.43