A random sample of 30 students is selected. each student is asked to report how much time they spent the previous night on math homework and how much time they spent on science homework. a 95% confidence interval for the true mean difference (math – science) in the amount of time spent on homework is 30 minutes to 75 minutes. a science teacher claims that students tend to spend more time working on math homework than on science homework. is this claim supported by the 95% confidence interval?
a. no, the confidence interval consists entirely of positive numbers.
b.no, the confidence interval does not contain the value of 0 hours.
c.yes, the confidence interval consists entirely of positive numbers.
d.yes, the confidence interval does not contain the value of 0 hours.