Analysis of a random sample consisting of m =20 specimens of cold-rolled steel to determine yield strengths of x = 29.8 ksi. A second random sample of n average 25 two-sided galvanized steel gave a ksi. ming that the two yield-strength distributions are normal with 4.0 and Steel: An Overview," Automotive Engr., Dec. 1984: in the article the data indicate that"Zinc-Coated Sheet 43), does suggested graph the corresponding true strengths w, and m are different? Let's carry out a test average yield significance