Test the claim use the t-test for dependent random, samples at the given level of significance. Is the test right-tailed, left-tailed, two-tailed. assume the population are normally distributed.
Claim ud<0 a=0.05 statistic d=-2.5, sd=3.5 n=11.
a) Find the critical values
b) Find calculate d and sd
c) what are the rejected region
d) find the standardized test statistic