Exhibit 8-5 A random sample of 64SAT scores of students applying for merit scholarships showed an average of 1400 with a standard deviation of 240 . 18. Refer to Exhibit 8-5. If we want to provide a 95% confidence interval for the SAT seores, the degrees of frecdom for reading the critical values of " t" " statistic is a. 60 b. 61 e. 62 d. 63 19. Refer to Exhibit 8-5. The "t" value for this interval estimation is a. 1.96 b. 1.998 c. 1.64 d. 1.28 20. Refer to Exhibit 8-5. The margin of error at 95% confidence is . 1.998 b. 1400 c. 240 d. 59.95 21. Refer to Exhibit 8-5. The 95\% confidence interval for the SAT scores is a. 1340.05 to 1459.95 b. 1400 to 1459.95 c. 1340.05 to 1400 d. 1400 to 1600