If an experiment's difference of means is 0.7, which illustration is the correct way to determine if the result is statistically significant?​

How do i do this activity, is appreciated

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents