Evidence to support administrator-s claim

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Reference no: EM1316851

Q1) Employment information service says that standard deviation of annual salaries for public relations managers is at least $14.500. Annual salaries for 18 randomly selected public relations managers are listed. At a = 0.10, can you refuse the claim?

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

Q2) On physical science assessment test, scores of a random sample of 22 eighth grade students have standard deviation of 27.7. This result prompts a test administrator to claim that standard deviation for eighth graders on examination is less than 29.At a = 0.10, is there sufficient evidence to support administrator's claim?

Reference no: EM1316851

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