The SpockTrial.rds dataset contains the percentage of women in 7 judge venires. Dr. Spock was a famous pediatrician with innovative ideas about how to raise children. In 1968, he was tried (in Boston) on charges of encouraging young men to resist being drafted into military service for Vietnam. Female representation among jurors was studied in this famous case to see if fewer female jurors were selected for Spock's case than for other cases Carry out a one-tail t-test for the hypothesis that the Spock judge's mean is less than the mean for judge A. What is the degree of freedom for the t-ratio