Question

(Please help with both A and B)

There is evidence that cytotoxic T lymphocytes (T cells) participate in controlling tumor growth and that they can be harnessed to use the body's immune system to treat cancer. One study investigated the use of a T cell-engaging antibody, blinatumomab, to recruit T cells to control tumor growth. The data below are T cell counts (1000 per microliter) at baseline (beginning of the study) and after 20 days on blinatumomab for 6 subjects in the study. The difference (after 20 days minus baseline) is the response variable.

Baseline	0.04	0.02	0	0.02	0.35	0.28
After 20 days	0.08	0.27	1.2	0.05	0	0.34
Difference	0.04	0.25	1.2	0.03	-0.35	0.06

Do the data give evidence at the 4 % level that the mean count of T cells is higher after 20 days on blinatumomab?

A. The test statistic is t =  (±±0.001)

B.Do the data give evidence at the 4 % level that the mean count of T cells is higher after 20 days on blinatumomab?

No

Yes

Answer 1