Question: A new study has found that, on average, 6- to 12-year-old children are spending less time on household chores today compared to 1981 levels. Suppose

A new study has found that, on average, 6- to 12-year-old children are spending less time on household chores today compared to 1981 levels. Suppose two samples representative of the study's results report the following summary statistics for the two periods. 1981 Levels x = 30 minutes x2= S =4.2 minutes $2 n = 30 = 2021 Levels 24 minutes 3.9 minutes n = 30 Which of the following are the appropriate competing hypotheses? Ho: H1-H2 SO, HA: H1-H2>O Ho: H1 H2O, HA: H1-H2 <0 ho: h1 h2>O, HA: H1-H2 0 O Ho H1 H2 O. HA: H1-H2/0

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