Answers for following statistics questions

. In a one-way Chi-square, the Null Hypothesis would state that the populations frequencies would state that the population categorical means would be equal? TfF . By drawing a simple random sample, one is assured of freedom from sampling errors.TlF . The process of dividing a population into strata for the purpose of stratified random sampling reduces bias in the sampling process. T/F . Most research is based on the study of ? Group of answer choices samples populations control groups experimental groups . Samples generally Group of answer choices represent their populations and contain errors do not represent their populations and contain errors represent their populations and do not contain errors do not represent their populations and do not contain errors . This type of sample is chosen based on time, money and minimal effort