A researcher has a new treatment for anxiety. The researcher knows that anxiety scores are normally distributed with = 70 and = 15. The researcher administers their new treatment to a sample of individuals and subsequently measures anxiety levels. If the sample size was n = 30 and M = 63 after treatment, can the researcher conclude the new treatment has an effect? Justify your response. If the sample size was n = 120 and M = 60 after treatment, can the researcher conclude the new treatment has an effect? Justify your response.