SM Globe telecommunication claims that the number of clients served in their department have increased, and now average over 150 clients per day. His superior wishes to test this claim. Suppose a...

SM Globe telecommunication claims that the number of clients served in their
department have increased, and now average over 150 clients per day. His
superior wishes to test this claim. Suppose a sample is taken with the following
results: n = 40 days, x = 200 clients (Assume  = 5 is known). Using 6 steps
test the hypothesis at 0.05 level of significance.