A two to three week incubation period usually occurs between the inoculation of T pallidum and development of the lesion (the range of incubation period is reported as being 9-90 days). Local, non-tender lymphadenopathy is often associated with this lesion. Figure 3 â3 shows primary syphilis lesions on the penis.
Rejecting or failing to reject the null hypothesis. Let's return finally to the question of whether we reject or fail to reject the null hypothesis. If our statistical analysis shows that the significance level is below the cut-off value we have set (e.g., either 0.05 or 0.01), we reject the null hypothesis and accept the alternative hypothesis.
It is not possible to test a hypothesis directly. Instead, you must turn the hypothesis into a null hypothesis. The null hypothesis is created from the hypothesis by adding the words no or not to the statement. For example, the null hypotheses for the two examples would be: There is no significant relationship between the age of managers and their attitudes towards the reorganization.