SOLUTION: The predicted high temperatures for a day in late May for a random sample of U.S. cities are listed here. Estimate the mean population high temperatures with 90% confidence. 60

Question 1054824: The predicted high temperatures for a day in late May for a random sample of U.S. cities are listed here. Estimate the mean population high temperatures with 90% confidence.
60 73 103 67 89 76
88 86 79 72 88 87
How do I find s for this problem?
Thanks!
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi  

using an excel spreadsheet..any statistical calculator can be used as well.

x	m	(x-m)	(x-m)^2	

60	81	-21	441	

73	81	-8	64	

103	81	22	484	

67	81	-14	196	

89	81	8	64	

76	81	-5	25	

88	81	7	49	

86	81	5	25	

79	81	-2	4	

72	81	-9	81	

88	81	7	49	

87	81	6	36	

968			1518	

81			138	1518/11

			11.747	sqrt(138)  s = 11.7



 

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