CL

z-value

Margin of Error

Mean Range

95%

1.96

0.942368

26.6 ≤ μ ≤ 28.4

98%

2.33

1.120264

26.4 ≤ μ ≤ 28.6

99%

2.58

1.240464

26.3 ≤ μ ≤ 28.7

100%

3.99

1.918392

25.6 ≤ μ ≤ 29.4