What would constitute a Type II error? a. Concluding that the magic pill does reduce anxiety when it does not. b. Concluding that the magic pill does not reduce anxiety when it actually does. c. Deciding that no conclusion can be drawn about the magic pill's efficacy. d. Deciding that the anxiety levels are unaffected for reasons other than the magic pill.Which statement best captures the rationale behind using a sample mean to infer the true value of a population mean? a. It is based on the certainty of knowing the population parameter's true value. b. It is a safe and practical approach when the population parameter's value is already known. c. It is the most feasible method since surveying every individual in the population is typically impractical. d. It is preferred because it eliminates all forms of error in the estimation process