3. Americans average 6.9 hours of sleep on weeknights, according to a report released in 2011 by the National Sleep Foundation. A student in a statistics class CCSF wondered if the average amount of sleep on weeknights is different for CCSF students. She collected data from a survey of 43 randomly selected students at CCSF. Respondents averaged 6.5 hours of sleep a weeknight with a standard deviation of 1.45 hours. a. What are the Null and Alternative Hypotheses in words and symbolic form. Ho: Ha: b. Can we use a normal model? Show or explain and if so, Z or T and why? C. Find the Test-Statistic. Find the p-value using technology. Round to 4 decimals. e. State a conclusion in context if we use a 5% alpha level