C2. Average years of education are reported by social class based on data from the GSS 2018. Mean Standard Deviation 12.19 Lower class 3.08 102 13.16 Working class 2.93 523 14.60 Middle class 2.88 498...

Extracted text: C2. Average years of education are reported by social class based on data from the GSS 2018. Mean Standard Deviation 12.19 Lower class 3.08 102 13.16 Working class 2.93 523 14.60 Middle class 2.88 498 15.21 Upper class 3.01 34 Construct the 95% confidence interval for the mean number of years of education а. for lower- and working-class respondents. 1 Construct the 99% confidence interval for the mean number of years of education for lower-class and middle-class respondents. As our confidence in the result increases, how does the size of the confidence interval Change? Explain why this is so.