Question 3 2 pts Researchers at CSU East Bay have been asked to estimate the proportion of CSU East Bay graduates who have found a job within one year of completing their degree. A survey was conducted and found that 315 of the 400 randomly sampled graduates from recent years found jobs within one year of completing their degree. The CSU East Bay graduating class last year included over 4500 students. Which of the following best described the population parameter of interest? The proportion of graduates from CSU East Bay who found a job within one year of completing their degree. 315/400 = 0.7875 proportion of graduates from the survey who found a job within one year of completing their degree. The students who found a job within one year out of the 4500 students from the CSU Easy Bay graduating class last year. Question 4 2 pts A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). A sample tuna sushi from different stores in a major city has a mean of 0.727 ppm of mercury and a standard deviation 0.386 ppm of mercury. Food safety officials are using this data to investigate if there is too much mercury in tuna sushi. Food safety officials want to estimate a range of likely values for the population mean level of mercury. Identify the appropriate statistics model and procedure: Normal distribution model (Z Stats), hypothesis test Normal distribution model (Z Stats), confidence interval O T- distribution model (T Stats), hypothesis test O T- distribution model (T Stats), confidence interval