Test and CI for Two Proportions: Freshmen, Senior
Event = Y
Variable X N Sample p
Freshmen 40 51 0.784314
Senior 24 27 0.888889
Difference = p (Freshmen) - p (Senior)
Estimate for difference: -0.104575
95% upper bound for difference: 0.0327967
Test for difference = 0 (vs < 0): Z = -1.25 P-Value = 0.105
The dats portrays that 40 freshmen answered yes to the question, while
only 11 answered no. Also, 24 seniors answered
yes while only 3 answered
no. So, 78% of freshman answered yes compared to 89% of seniors who answered
yes.
