Which of the following statements are true about the TESTABLE assumptions for the first question? Only one assumption is testable and it is met. Only one assumption is testable and it is NOT met. Only one assumption is testable and it is PARTIALLY met. Two assumptions are testable and they are BOTH met. Two assumptions are testable and NEITHER is met. Two assumptions are testable and ONLY ONE is met.

Explain the concept of Large-Sample Distribution of the Two Stage Least Square Estimator?

Would a descriptive, correlational, independet and dependent variable, quasi-experimental or experiemental, quantitative research design be best for a research question regarding social skills training versus pharmacological treatment?

Is narcissism a more common personality trait today than it was a few decades ago?  It is known that the mean population score on the Narcissistic Personality Inventory (NPI) for students attending University of South Alabama around 20 years ago was μ= 15 (Twenge, 2010).  Interested in the narcissism levels of students in the year 2020, a researcher administers the NPI to a random sample of 25 University of Alabama sophomores this Spring term. The mean NPI score from the researcher’s sample of sophomores is M = 16.5, with s = 3.4. 1. Write the null and alternative hypotheses in symbols. Possible symbols for your answer: H0, H1, μ, M, σ. 2. Calculate the standard error.  3. Find the critical value for the test statistic, assuming alpha = .05 (Use largest [i.e., most conservative] value if exact value not given in the chart)  a) 2.064 b) 1.96 c) 1.98 d) 2.000