Nancy is packing jars into boxes. each box has the same number of jars. she has 15 jars and packs them into 3 boxes. then she 40 jars and packs them into 8 boxes. how many boxes will she need to pack 70 jars?

(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.)