Statistic

The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was larger than that of school teachers. To Data: Nurses Teachers n1 8 841 845 n2 12 890 826 x1-bar 835.75 821 827 x2-bar 826.75 771 875 s1 34.40 850 784 s2 22.84 859 809 825 802 (1) Formulate the hypotheses: 829 820 829 Ha: μ1 ≤ μ2 830 Ha: μ1 > μ2 842 832

A sample of 200 observations from the first population indicated that X1 is 170. A sample of 150 observations from the second population revealed X2 to be 110. Use the .05 significance level to test the hypothesis. The Roper Organization conducted identical surveys in five year apart. One question asked women was, “Are most men basically kind, gentle, and thoughtful?” The earlier survey revealed that, of the 3,000 women surveyed, 2,010 said that they were. The late revealed 1,530 of the 3,00...