Jackson sampled 101 students and calculated an average of 6.5 hours of sleep each night with a standard deviation of 2.14. Using a 95% confidence level, he also found that t* = 1.984. c o n f i d e n c e space i n t e r v a l space equals space x with bar on top plus-or-minus t asterisk times space bevelled fraction numerator s over denominator square root of n end fraction 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.