Activity level Inactive Moderate Vigorous Total No 598 1,347 844 2,789 Total 653 1,692 1,109 3,454 1. Is this an experiment or an observational study? How are you deciding? 2. Identify the observational units. 3. Identify the explanatory and response variables. Also, for each variable, identify whether it is categorical or quantitative. 4. State the appropriate null and alternative hypotheses. 1 Describe how one might use everyday items (for example, coins, dice, cards, etc.) to conduct a tactile simulationbased test of the hypotheses. Be sure to clearly describe how the pvalue will be computed from the simulation. nd-\"P .r'.1 1 . I I r