please i need help with my sample quiz thank you and there are three different questions

Select the true statement(s) about studies and random samples. I:I A simple random sample is a systematic pattern for selecting objects from a population. [:1 In an experimental study, the researchers investigate the effects of certain conditions on at least three different groups. [:1 The number of simple random samples is always innite. I:I A simple random sample is representative of the entire population of interest. D In an observational study, the researchers record the response for a specic variable for each individual or object. Complete the sentences to form the correct statements about sampling. It is very common to experience :] when data are collected using surveys. The researchers conducted an experiment that is well-designed and well-implemented. The data were gathered perfectly with no errors. Suppose they observed an experimental outcome that is very rare. What thing(s) could have happened? I: The claim about the population is actually false. I:I The researchers could have gotten very lucky (or very unlucky). I: One or more of the experimental subjects was lying. D The researchers faked the data