Trying to figure out how to find the lower and upper part of the confidence interval with an excel formula. Looking for the excel formula and answer to check my work. The confidence interval is at 95%. Thankyou (: mean $142,418.35 median $117,610.00 mode $157,895.00 standard deviation $104,051.36 variance range $1,110,697.00 count $3,200.00 confidence interval(-) confidence interval(+)