)A recent Pew Research poll asked American whether they thought inteligent life existed outside Earth A)Categorical B)Qu

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)A recent Pew Research poll asked American whetherthey thought inteligent life existed outside EarthA)CategoricalB)Quantitative DiscreteC)Quantitative ContinuousD)None of these
2) -Should an observational study or an experiment be performedto answer theresearch question below? Explain your choice.-Do people who drink alcohol excessively tend to develop dementiamore frequentiythan those who don't drink excessively?
3 )A professor would like to know what percentage of studentsthat take Biology 110are actually buying the textbook. To ensure arepresentative sample she divided thestudents according to where they primarily took classes (Cal ,tempa And Florida)The college randomly choose 100 studentsfrom each group.Identify what type of sampling is described above.A)Cluster samplingB)Stratified SamplingC)Voluntary Response sampling D)Systematic Sampling
4. A local pool kept data on the number times it took their youthmembers to pass thedeep-water test.
Determine the relative frequency for those that it look exacty 1fime. Leave youranswer as a number between 0 and 1.Round to 3 decimal places if needed. show working