For questions x-x perform the indicated operation. don't forget to determine the sign of your answer first. q: what does the "sign of my answer" mean? here is an example of one of the operations.. 77.94 - 77.94 + 42.09

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)