Homework Soursetwo sample hypothesis testingSolution1 the test statistic Z
two sample hypothesis testing
Solution
1) the test statistic Z = sample difference / std. error = .03/0.01545 = 1.9417 =1.942(rounded to 3 decimal places)
2) since Z < Zcritical i.e., 1.942 < 1.96 (at 5% LOS), conclude that the difference is not quite significant
3) Sincwe t stat = -1.3923 < t-critical = 2.086, conclude that there is no significant difference between the mean occupancy rates
4) when variances are unequal in t-test, then use a complicate formula for th degrees of freedom
