12) In constructing a confidence interval for o or o², a table is used to find the critical values 12)_ and X for values of n

Extracted text: 12) In constructing a confidence interval for o or o², a table is used to find the critical values 12)_ and X for values of n<101. for="" larger="" values="" of="" n,="" x="" and="" x="" 2.="" can="" be="" approximated="" by="" using="" the="" following="" formula:="" +v2k="" -1="" where="" k="" is="" the="" number="" of="" degrees="" of="" freedom="" and="" z2="" is="" the="" critical="" z-score.="" construct="" the="" 90%="" confidence="" interval="" for="" ơ="" using="" the="" following="" sample="" data:="" a="" sample="" of="" size="" n="232" yields="" a="" mean="" weight="" of="" 154="" lb="" and="" a="" standard="" deviation="" of="" 25.5="" lb.="" round="" the="" confidence="" interval="" limits="" to="" the="" nearest="" hundredth.="" a)="" 23.66="" lb=""><><27.58 lb="" b)="" 23.39="" lb=""><28.09 lb="" c)="" 24.09="" lb="">< o=""><27.15 lb="" d)="" 23.71="">< o=""><27.65>