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March 28, 2015

March 28, 2015

Posted by **Tab** on Wednesday, January 26, 2011 at 4:28pm.

121 115 124 99 134 121 110 116 113 96 116 116 135 96 96 116

A random sample of n2 = 14 communities in western Kansas gave the following rates of hay fever per 1000 population for people over 50 years old.

113 86 106 102 113 94 94 108 103 99 78 105 88 100

Assume that the hay fever rate in each age group has an approximately normal distribution. Using the method outlined in Brase and Brase, do the data indicate that the age group over 50 has a lower rate of hay fever? Use Do you reject or fail to reject the null hypothesis? Are the data statistically significant at the level of significance?

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