confidence interval = Y: I\" S/ A 95% confidence interval calculates that the average number of hours of sleep for working college students is between hours. Answer choices are rounded to the hundredths place. 0 a.) 6.46 and 6.92 O b.) 6.08 and 6.92 O c.) 6.46 and 6.54 Q d.) 6.15 and 6.94