Perform the test mentioned in Problem 10.95, and report a two-tailed p-value. What is your conclusion regarding the effectiveness of the undiluted in contrast to the 1:100 diluted vaccine? 

A more quantitative measure of efficacy was the cytotoxic T-cell response. The results are shown in Table 10.39.

Table 10.39 Cytotoxic T-cell response (lytic units per 106 cells) to various doses of smallpox vaccinea

 

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T-cell response Type of vaccine 1-99 100 + Undiluted 10 1:10 dilution 1:100 dilution 15 1 Some assays were missing, so not all sample sizes add up to 20.