Show all the work please

Use the following scenario to answer questions 8 - 11. Use a separate sheet of paper. Researchers wondered if temperature might influence the age at which babies learn to crawl. Data was collected on 208 boys and 206 girls. Parents reported the month of the baby's birth and the age (in weeks) at which their child first crawled. The table gives the average temperature (F) when the babies were 6 months old and the average crawling age (in weeks) for each month of the year. Birth Month 6-Month Temperature Average Crawling Age January 66 29.84 February 73 30.52 March 72 29.70 April 63 31.84 May 52 28.58 June 39 31.44 July 33 33.64 August 30 32.82 September 33 33.83 October 37 33.35 November 48 33.38 December 37 32.32 8. Would this association appear to be weaker, stronger, or about the same if data had been plotted for individual babies instead of using monthly averages? Explain. 9. Does this data meet the assumptions for inference for regression? State and check them. 10. Is there evidence of an association between Temperature and Crawling Age? Test an appropriate hypothesis and state your conclusions. 11. Create and interpret a 95% confidence interval for the slope of the true relationship