construct a 90% confidence interval about μ1 -μ2, statistics homework help
construct a 90% confidence interval about μ1 -μ2, statistics homework help
Assuming that both populations are normally distributed, construct a 90% confidence interval about μ1 -μ2. (μ1 represents the mean of the experimental group and μ2 represents the mean of the control group.)
Experimental Control
n 22 16
x̄ 45.4 40.7
s 4.1 13.6
The confidence interval has a lower bound of ___ and an upper bound of ___.
(Use ascending order. Round to two decimal places as needed.)