Let's conclude the hypothesis test from Questions 1 - 6. At the 5% significance level, can we conclude that adults in 2015 spent less time on their mobile devices each day than adults in 2019? Question 8 / 13 What can we conclude about the null and alternative hypotheses? Reject both the null and alternative hypotheses. Support both the null and alternative hypotheses. Reject the null hypothesis and support the alternative hypothesis. Fail to reject the null hypothesis and fail to support the alternative hypothesis