Graphing y=0.2x+0.3 graphing y=0.05x+0.4

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Agrain trader buys the following amounts from three suppliers: 3,200 pounds, 5,100 pounds and 700 pounds. what is the total weight of his purchase?

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth