30.5 $P$-values: Consistency with assumption?

A $P$-value is needed to determine if the sample statistic is consistent with the assumption. Since the $t$-score is large, the $P$-value will be small using the 68–95–99.7 rule. This is confirmed by the software (jamovi: Fig. 30.1; SPSS: Fig. 30.2): the two-tailed $P$-value is $0.011$. The small $P$-value suggests that the observations are inconsistent with the assumption (Table 28.1).

Click on the hotspots in the following image, to see what the SPSS output tells us.