Ninety percent of the nation's primary and secondary school systems are operated by independent school districts, but cities, counties, towns, or townships run the schools in some states

The statement that there is no statistically significant difference between two population variances exemplifies a(n)

A) No-difference hypothesis. B) Null hypothesis. C) No-difference theorem. D) Alternative hypothesis.

Which technological innovation made it significantly harder for monarchs to rule based on the narrative of divine right?

a. the postal system b. the telegraph c. the printing press d. the Protestant church