Statistic
University of lahore
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Null and Alternative Hypothesis
- Answers • 5 pages • 2019
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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
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Null and Alternative Hypothesis
- Answers • 11 pages • 2019
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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...
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