a) Give the correct notation for the quantity described and give its value: Average enrollment for all charter schools in Illinois in 2014. In 2014, there were 148 charter schools in the state of Illinois and the total number of students attending the charter schools was 59,388. Give the correct notation for the quantity described and the value of the quantity described. Round your answer to one decimal place. Show some work for full credit. b) A random sample of n = 461 smartphone users in the US in January 2015 found that 355 of them have downloaded an app. Give notation for the parameter of interest in this study and describe the parameter. Give the notation for the statistic used to estimate the parameter. Give the value of the point estimate. Round your answer to three decimal places. Show some work for full credit