0 Question 8 v A random sample of 36 female professional soccer players found an average height of 66.1 inches, with a standard deviation of 2.5 inches. Build a 95% CI for the mean height of female professional soccer players. This will be a T-Interval since 0' is not known. So we need to compute the Degrees of Freedom: (if. =n1 a.d.f. = To find the Margin of Error, E, we need to find the Critical Value, Tc. To do this we use ian{C + (1- C]!2,d.f.}, where in this problem 0 = 0.95. Round to three decimals. b. Tc = 3 Next we find the Margin of Error: E 2 TC - . Round to one decimal. c.E= Finally, we compute our Cl: 5 E <: pr. :t: e>