9. Calculate Condence Intervals: a, In this example, our groups have unequal sample sizes (n = 7 vs. n = 6). This makes computations somewhat more complicated. See page 213 & Table 10.5 lpg. 2.12). b. Calculate Standard Error ofthe Difference Score represented as 5X3-\" c. Calculate the Lower & Upper Limits: 10. Perform a null-hypothesis signicance test [NH5T) by calculating the t-statistic & comparing it to t-statistic for the appropriate alpha lpvalue). a. Decide what the null and alternative hypotheses are. Remember, the null hypothesis is that the two groups are equivalent (H0: 721 : fzjr The alternative hypothesis can be either oneitailed(either.H1:.\\"1 > Tc'z' or Ht: 931 > it}! or tweetailed \"11:7; at 721). b. Decide on an alpha level. Alpha refers to the probability of making a Type 1 error (incorrectly rejecting the null hypothesis). We refer to this as the pevaiue (probability value) that we will accept as statistically significant. In most cases, p less than .05 (p