14. A study done by Dr. S. Friedler, a trained mime and a physician, found evidence that being entertained by live clowns immediately after in-vitro fertilization (IVF) may increase conception rates (Friedler et al, 2011) DOI: 10.1016. Yes, this real study was about whether watching 15 minutes of 'medical clowning' after an embryo transfer or IVF would affect the chance of a successful pregnancy. The 170 women in the study were randomly assigned to either c/lown or no clowncondition. Please use these data to test whether pregnancy rates were independent of being entertained by a clown after IVF. Show your work and include each step in the hypothesis testing process. Observed data: Pregnant Not Pregnant Clown 31 54 No Clown 12 73 a. State the null and alt hypotheses. b. Find df and critical value for the chi-square test. c. Calculate the expected frequencies and the chi-square test value. Is it significant? d. Report the results in an APA conclusion sentence with test used, variables (IV/DV), decision, and report the stats in APA format - even if not significant