Scientists announced that an astronomical object discovered back in june is the largest known

The arizona department of transportation wishes to survey state residents to determine what proportion of the population would like to increase statewide highway speed to 75 from 65 mph. at least how many residents do they need to survey if they want to be at least 99% confident that the sample proportion is within 0.09 of the true proportion?

Policies that physically separate a minority group from the dominant group.

Josh is teaching michael how to be an effective speaker. what two general hints for effective informative speaking should josh share?