The following ANOVA table is testing for significant differences between employment groups in the number of sexual partners reported last year. Using only the information given:

a) Calculate how many categories of employment groups were analyzed

b) Give the total number of respondents surveyed.

ANOVA HOW MANY SEX PARTNERS R HAD IN LAST YEAR Sum of Squares df Mean Square F Sig. Between Groups 29.385 2 14.693 9.942 000 Within Groups 3862.938 2614 1.478 Total 3892.323 2616