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Salaries An employment information service says that standard deviation of annual salaries for public relations managers is at least $14.500. The annual salaries for 18 randomly selected public relations managers are listed. At a = 0.10, can you reject the claim? (Adapted from America's Career InfoNet)

 

47.517 

60.217 

39.177 

61.744

79.422

70.770

60.549

60.263

72.939

72.372

75.014

59.164

44.811

65.413

61.310

90.433

44.185

41.805

 

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