2. Many studies have found that children who listen to classical music while in the womb or when younger tend to have higher IQs later in life. These studies are typically done by surveying parents of older children about whether they played classical music when the child was younger and conducting an IQ test of the child. (a) Are these studies observational studies or experiments? (1) (b) Will a cause-and-effect conclusion be possible? (2) (c) Identify the observational units in these studies. (1) (d)Identify the explanatory and the response variables in these studies and state if they are quantitative or categorical. (4) 3. (TRUE or FALSE) We will get the same conclusion whether we interpret the standardized statistic, the confidence interval, or the p-value. (1 pt) 4. (TRUE or FALSE) If we fail to reject at =0.10 then we will also fail to reject at =0.05 (1 pt) 5. (TRUE or FALSE) If we reject at =0.01 then we will also reject at =0.10 (1 pt)