Agraduate student wanted to estimate the average time spent studying among graduate students at her school. she randomly sampled graduate students from her school and obtained a 99% confidence interval of (17,25) hours/week. which of the following would be true if the level of confidence was lowered to 95%? choose the correct answer below. a. the width of the confidence interval would remain the same. b. the width of the confidence interval would be smaller. c. the width of the confidence interval would be larger. d. more information is needed to determine what would happen to the width of the confidence interval.