Test H0: μ1= μ2 and Ha: μ1 ≠ μ2 when the samples have
n1=35,s1=15,x¯1=78 and n2=40,s2=12,x¯2=72.n1=35,s1=15,x¯1=78 and n2=40,s2=12,x¯2=72. The standard error of x¯1−x¯2x¯1−x¯2 from the randomization distribution is 3.2.
Find the value of the standardized z-test statistic.
