Dominic loves buying packs of skateboarding wheels at Active. Each pack (p) of wheels cost $9. What is the relationship between the number of packs, p, and the total cost, c? Part A: Identify the independent and dependent variables. Independent Variable: Pack of Wheels Dependent Variable: Total Cost Part B: Write an equation using the variables p and c to represent the relationship between the number of packs and the total cost. Part C: What would the total cost be if Dominic buys 7 packs of wheels? The total cost will be $ 63

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.