R3/2 (2-2 dr: 1. for the integral (a) (3 marks) approximate the integral with a left riemann sum with n illustrate your calculation with a diagram. 3, and (2-e) flagbe n-d 3 2 1t ints afe 3 +7 + (b) (4 marks) find the exact value of the integral by finding the limit of a riemann sum. other methods will not get any credit. lim 70 n-d itft rints 1/2-4 l ( a nis nけknown l f(- e)f

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

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.