Case	CD4 T-Cell Count
1	198
2	202
3	220
4	240
5	223
6	201
7	189
8	199
9	219
10	203
11	232
12	207

Write the null hypothesis using mathematical notation H₀: ________________

Write the alternative hypothesis using mathematical notation H₁: ________________

What is the mean CD4+ T-cell count for 12 persons? ________________

Using = .05, one-tailed, should we reject or retain the null hypothesis? ________________

What is the effect size for the analysis? ________________

Write results of the analysis in APA notation: ________________